56123004 has 48 divisors (see below), whose sum is σ = 154828800. Its totient is φ = 15481536.

The previous prime is 56123003. The next prime is 56123021. The reversal of 56123004 is 40032165.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56123003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9084 + ... + 13955.

It is an arithmetic number, because the mean of its divisors is an integer number (3225600).

Almost surely, 2^56123004 is an apocalyptic number.

It is an amenable number.

56123004 is an abundant number, since it is smaller than the sum of its proper divisors (98705796).

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

56123004 is a wasteful number, since it uses less digits than its factorization.

56123004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23082 (or 23080 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 56123004 is about 7491.5288159360. The cubic root of 56123004 is about 382.8661486017.

Adding to 56123004 its reverse (40032165), we get a palindrome (96155169).

The spelling of 56123004 in words is "fifty-six million, one hundred twenty-three thousand, four".