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56454131 = 311821101
BaseRepresentation
bin1101011101011…
…0101111110011
310221020011111202
43113112233303
5103423013011
65334001415
71253565206
oct327265763
9127204452
1056454131
1129959908
1216aa626b
13b908016
1476d793d
154e5223b
hex35d6bf3

56454131 has 4 divisors (see below), whose sum is σ = 58275264. Its totient is φ = 54633000.

The previous prime is 56454113. The next prime is 56454143. The reversal of 56454131 is 13145465.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13145465 = 52629093.

It is a cyclic number.

It is not a de Polignac number, because 56454131 - 214 = 56437747 is a prime.

It is a super-2 number, since 2×564541312 = 6374137813930322, 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 = 56454094 and 56454103.

It is not an unprimeable number, because it can be changed into a prime (56454031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910520 + ... + 910581.

It is an arithmetic number, because the mean of its divisors is an integer number (14568816).

Almost surely, 256454131 is an apocalyptic number.

56454131 is a deficient number, since it is larger than the sum of its proper divisors (1821133).

56454131 is a wasteful number, since it uses less digits than its factorization.

56454131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821132.

The product of its digits is 7200, while the sum is 29.

The square root of 56454131 is about 7513.5964091772. The cubic root of 56454131 is about 383.6176455787.

Adding to 56454131 its reverse (13145465), we get a palindrome (69599596).

The spelling of 56454131 in words is "fifty-six million, four hundred fifty-four thousand, one hundred thirty-one".

Divisors: 1 31 1821101 56454131