51324560 has 60 divisors (see below), whose sum is σ = 138822588. Its totient is φ = 17595648.

The previous prime is 51324521. The next prime is 51324571. The reversal of 51324560 is 6542315.

It can be written as a sum of positive squares in 2 ways, for example, as 33918976 + 17405584 = 5824^2 + 4172^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2627 + ... + 10466.

Almost surely, 2^51324560 is an apocalyptic number.

It is an amenable number.

51324560 is an abundant number, since it is smaller than the sum of its proper divisors (87498028).

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

51324560 is a wasteful number, since it uses less digits than its factorization.

51324560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13120 (or 13107 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 51324560 is about 7164.1161352954. The cubic root of 51324560 is about 371.6279859021.

Adding to 51324560 its reverse (6542315), we get a palindrome (57866875).

The spelling of 51324560 in words is "fifty-one million, three hundred twenty-four thousand, five hundred sixty".