51768504 has 64 divisors (see below), whose sum is σ = 146196000. Its totient is φ = 16968960.

The previous prime is 51768491. The next prime is 51768523. The reversal of 51768504 is 40586715.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11212 + ... + 15140.

Almost surely, 2^51768504 is an apocalyptic number.

51768504 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 51768504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73098000).

51768504 is an abundant number, since it is smaller than the sum of its proper divisors (94427496).

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

51768504 is a wasteful number, since it uses less digits than its factorization.

51768504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005 (or 3995 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 51768504 is about 7195.0332869279. The cubic root of 51768504 is about 372.6964061905.

The spelling of 51768504 in words is "fifty-one million, seven hundred sixty-eight thousand, five hundred four".