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53417231 = 727072819
BaseRepresentation
bin1100101111000…
…1010100001111
310201111212122222
43023301110033
5102133322411
65144525555
71216016240
oct313612417
9121455588
1053417231
112817517a
1215a808bb
13b0b393a
147146cc7
154a524db
hex32f150f

53417231 has 8 divisors (see below), whose sum is σ = 61092480. Its totient is φ = 45753048.

The previous prime is 53417173. The next prime is 53417237. The reversal of 53417231 is 13271435.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53417231 - 26 = 53417167 is a prime.

It is a super-2 number, since 2×534172312 = 5706801135414722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53417231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53417237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17540 + ... + 20358.

It is an arithmetic number, because the mean of its divisors is an integer number (7636560).

Almost surely, 253417231 is an apocalyptic number.

53417231 is a deficient number, since it is larger than the sum of its proper divisors (7675249).

53417231 is a wasteful number, since it uses less digits than its factorization.

53417231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5533.

The product of its digits is 2520, while the sum is 26.

The square root of 53417231 is about 7308.7092567703. The cubic root of 53417231 is about 376.6116849639.

Adding to 53417231 its reverse (13271435), we get a palindrome (66688666).

The spelling of 53417231 in words is "fifty-three million, four hundred seventeen thousand, two hundred thirty-one".

Divisors: 1 7 2707 2819 18949 19733 7631033 53417231