56494581 has 64 divisors (see below), whose sum is σ = 96768000. Its totient is φ = 28788480.

The previous prime is 56494579. The next prime is 56494583. The reversal of 56494581 is 18549465.

It is an interprime number because it is at equal distance from previous prime (56494579) and next prime (56494583).

It is not a de Polignac number, because 56494581 - 2¹ = 56494579 is a prime.

It is a super-2 number, since 2×56494581² = 6383275364731122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56494583) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 236260 + ... + 236498.

It is an arithmetic number, because the mean of its divisors is an integer number (1512000).

Almost surely, 2^56494581 is an apocalyptic number.

It is an amenable number.

56494581 is a deficient number, since it is larger than the sum of its proper divisors (40273419).

56494581 is a wasteful number, since it uses less digits than its factorization.

56494581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314.

The product of its digits is 172800, while the sum is 42.

The square root of 56494581 is about 7516.2877140248. The cubic root of 56494581 is about 383.7092457790.

Subtracting from 56494581 its reverse (18549465), we obtain a triangular number (37945116 = T₈₇₁₁).

It can be divided in two parts, 56494 and 581, that added together give a palindrome (57075).

The spelling of 56494581 in words is "fifty-six million, four hundred ninety-four thousand, five hundred eighty-one".