51332364 has 18 divisors (see below), whose sum is σ = 129756900. Its totient is φ = 17110776.

The previous prime is 51332353. The next prime is 51332377. The reversal of 51332364 is 46323315.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 712914 + ... + 712985.

Almost surely, 2^51332364 is an apocalyptic number.

It is an amenable number.

51332364 is an abundant number, since it is smaller than the sum of its proper divisors (78424536).

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

51332364 is a wasteful number, since it uses less digits than its factorization.

51332364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425909 (or 1425904 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 51332364 is about 7164.6607735468. The cubic root of 51332364 is about 371.6468205356.

Adding to 51332364 its reverse (46323315), we get a palindrome (97655679).

The spelling of 51332364 in words is "fifty-one million, three hundred thirty-two thousand, three hundred sixty-four".