56661042 has 8 divisors (see below), whose sum is σ = 113322096. Its totient is φ = 18887012.

The previous prime is 56661019. The next prime is 56661043. The reversal of 56661042 is 24016665.

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

56661042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (56661043) 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, 4721748 + ... + 4721759.

It is an arithmetic number, because the mean of its divisors is an integer number (14165262).

Almost surely, 2^56661042 is an apocalyptic number.

56661042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56661042 is a wasteful number, since it uses less digits than its factorization.

56661042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9443512.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 56661042 is about 7527.3529211802. The cubic root of 56661042 is about 384.0857420297.

The spelling of 56661042 in words is "fifty-six million, six hundred sixty-one thousand, forty-two".