51768024 has 128 divisors (see below), whose sum is σ = 163468800. Its totient is φ = 13271040.

The previous prime is 51768011. The next prime is 51768029. The reversal of 51768024 is 42086715.

It is a Cunningham number, because it is equal to 7195²-1.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51768029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201304 + ... + 201560.

It is an arithmetic number, because the mean of its divisors is an integer number (1277100).

Almost surely, 2^51768024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51768024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81734400).

51768024 is an abundant number, since it is smaller than the sum of its proper divisors (111700776).

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

51768024 is a wasteful number, since it uses less digits than its factorization.

51768024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 51768024 is about 7194.9999305073. Note that the first 4 decimals coincide. The cubic root of 51768024 is about 372.6952543008.

The spelling of 51768024 in words is "fifty-one million, seven hundred sixty-eight thousand, twenty-four".