51665528 has 16 divisors (see below), whose sum is σ = 96957000. Its totient is φ = 25810336.

The previous prime is 51665519. The next prime is 51665563. The reversal of 51665528 is 82556615.

It is a junction number, because it is equal to n+sod(n) for n = 51665491 and 51665500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10958 + ... + 14946.

Almost surely, 2^51665528 is an apocalyptic number.

It is an amenable number.

51665528 is a deficient number, since it is larger than the sum of its proper divisors (45291472).

51665528 is a wasteful number, since it uses less digits than its factorization.

51665528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5614 (or 5610 counting only the distinct ones).

The product of its digits is 72000, while the sum is 38.

The square root of 51665528 is about 7187.8736772428. The cubic root of 51665528 is about 372.4491241719.

The spelling of 51665528 in words is "fifty-one million, six hundred sixty-five thousand, five hundred twenty-eight".