51028372 has 6 divisors (see below), whose sum is σ = 89299658. Its totient is φ = 25514184.

The previous prime is 51028361. The next prime is 51028403. The reversal of 51028372 is 27382015.

It can be written as a sum of positive squares in only one way, i.e., 39765636 + 11262736 = 6306^2 + 3356^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51028372.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6378543 + ... + 6378550.

Almost surely, 2^51028372 is an apocalyptic number.

It is an amenable number.

51028372 is a deficient number, since it is larger than the sum of its proper divisors (38271286).

51028372 is a wasteful number, since it uses less digits than its factorization.

51028372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12757097 (or 12757095 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 51028372 is about 7143.4145896763. The cubic root of 51028372 is about 370.9117325243.

It can be divided in two parts, 510 and 28372, that added together give a palindrome (28882).

The spelling of 51028372 in words is "fifty-one million, twenty-eight thousand, three hundred seventy-two".