56245681 has 8 divisors (see below), whose sum is σ = 59425280. Its totient is φ = 53088048.

The previous prime is 56245669. The next prime is 56245691. The reversal of 56245681 is 18654265.

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 56245681 - 2⁹ = 56245169 is a prime.

It is a super-2 number, since 2×56245681² = 6327153262307522, 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 56245681.

It is not an unprimeable number, because it can be changed into a prime (56245601) 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, 81 + ... + 10606.

It is an arithmetic number, because the mean of its divisors is an integer number (7428160).

Almost surely, 2^56245681 is an apocalyptic number.

It is an amenable number.

56245681 is a deficient number, since it is larger than the sum of its proper divisors (3179599).

56245681 is a wasteful number, since it uses less digits than its factorization.

56245681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10983.

The product of its digits is 57600, while the sum is 37.

The square root of 56245681 is about 7499.7120611394. The cubic root of 56245681 is about 383.1449094556.

The spelling of 56245681 in words is "fifty-six million, two hundred forty-five thousand, six hundred eighty-one".