56524981 has 4 divisors (see below), whose sum is σ = 59500000. Its totient is φ = 53549964.

The previous prime is 56524939. The next prime is 56525023. The reversal of 56524981 is 18942565.

56524981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (56524939) and next prime (56525023).

It is a cyclic number.

It is not a de Polignac number, because 56524981 - 2⁹ = 56524469 is a prime.

It is a super-2 number, since 2×56524981² = 6390146954100722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56524901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1487481 + ... + 1487518.

It is an arithmetic number, because the mean of its divisors is an integer number (14875000).

Almost surely, 2^56524981 is an apocalyptic number.

It is an amenable number.

56524981 is a deficient number, since it is larger than the sum of its proper divisors (2975019).

56524981 is a wasteful number, since it uses less digits than its factorization.

56524981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975018.

The product of its digits is 86400, while the sum is 40.

The square root of 56524981 is about 7518.3097169510. The cubic root of 56524981 is about 383.7780586882.

The spelling of 56524981 in words is "fifty-six million, five hundred twenty-four thousand, nine hundred eighty-one".