56115504 has 140 divisors (see below), whose sum is σ = 173209896. Its totient is φ = 17542656.

The previous prime is 56115481. The next prime is 56115529. The reversal of 56115504 is 40551165.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 198147 + ... + 198429.

Almost surely, 2^56115504 is an apocalyptic number.

56115504 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56115504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86604948).

56115504 is an abundant number, since it is smaller than the sum of its proper divisors (117094392).

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

56115504 is a wasteful number, since it uses less digits than its factorization.

56115504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 56115504 is about 7491.0282338274. The cubic root of 56115504 is about 382.8490930639.

Adding to 56115504 its reverse (40551165), we get a palindrome (96666669).

The spelling of 56115504 in words is "fifty-six million, one hundred fifteen thousand, five hundred four".