56401004 has 18 divisors (see below), whose sum is σ = 108491292. Its totient is φ = 25636600.

The previous prime is 56401001. The next prime is 56401021. The reversal of 56401004 is 40010465.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (56401001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57782 + ... + 58749.

It is an arithmetic number, because the mean of its divisors is an integer number (6027294).

Almost surely, 2^56401004 is an apocalyptic number.

It is an amenable number.

56401004 is a deficient number, since it is larger than the sum of its proper divisors (52090288).

56401004 is a wasteful number, since it uses less digits than its factorization.

56401004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116557 (or 116544 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 56401004 is about 7510.0601861769. The cubic root of 56401004 is about 383.4972714464.

Adding to 56401004 its reverse (40010465), we get a palindrome (96411469).

The spelling of 56401004 in words is "fifty-six million, four hundred one thousand, four".