51324504 has 64 divisors (see below), whose sum is σ = 159978240. Its totient is φ = 13330560.

The previous prime is 51324467. The next prime is 51324509. The reversal of 51324504 is 40542315.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51324509) 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, 12039 + ... + 15734.

It is an arithmetic number, because the mean of its divisors is an integer number (2499660).

Almost surely, 2^51324504 is an apocalyptic number.

It is an amenable number.

51324504 is an abundant number, since it is smaller than the sum of its proper divisors (108653736).

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

51324504 is a wasteful number, since it uses less digits than its factorization.

51324504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27800 (or 27796 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 51324504 is about 7164.1122269267. The cubic root of 51324504 is about 371.6278507415.

Adding to 51324504 its reverse (40542315), we get a palindrome (91866819).

The spelling of 51324504 in words is "fifty-one million, three hundred twenty-four thousand, five hundred four".