51275328 has 56 divisors (see below), whose sum is σ = 146108928. Its totient is φ = 15776256.

The previous prime is 51275291. The next prime is 51275353. The reversal of 51275328 is 82357215.

51275328 is nontrivially palindromic in base 14.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7776 + ... + 12767.

It is an arithmetic number, because the mean of its divisors is an integer number (2609088).

Almost surely, 2^51275328 is an apocalyptic number.

It is an amenable number.

51275328 is an abundant number, since it is smaller than the sum of its proper divisors (94833600).

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

51275328 is a wasteful number, since it uses less digits than its factorization.

51275328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20571 (or 20561 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 51275328 is about 7160.6792973851. The cubic root of 51275328 is about 371.5091224565.

The spelling of 51275328 in words is "fifty-one million, two hundred seventy-five thousand, three hundred twenty-eight".