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553433431 = 3671507993
BaseRepresentation
bin100000111111001…
…011100101010111
31102120101022221111
4200333023211113
52113134332211
6130525555451
716500051355
oct4077134527
91376338844
10553433431
11264442801
12135415b87
138a873205
14537047d5
15338c0421
hex20fcb957

553433431 has 4 divisors (see below), whose sum is σ = 554941792. Its totient is φ = 551925072.

The previous prime is 553433407. The next prime is 553433437. The reversal of 553433431 is 134334355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134334355 = 526866871.

It is a cyclic number.

It is not a de Polignac number, because 553433431 - 25 = 553433399 is a prime.

It is a super-2 number, since 2×5534334312 = 612577125096863522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 553433393 and 553433402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553433437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753630 + ... + 754363.

It is an arithmetic number, because the mean of its divisors is an integer number (138735448).

Almost surely, 2553433431 is an apocalyptic number.

553433431 is a deficient number, since it is larger than the sum of its proper divisors (1508361).

553433431 is a wasteful number, since it uses less digits than its factorization.

553433431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508360.

The product of its digits is 32400, while the sum is 31.

The square root of 553433431 is about 23525.1659080228. The cubic root of 553433431 is about 821.0226340031.

Adding to 553433431 its reverse (134334355), we get a palindrome (687767786).

The spelling of 553433431 in words is "five hundred fifty-three million, four hundred thirty-three thousand, four hundred thirty-one".

Divisors: 1 367 1507993 553433431