51328684 has 48 divisors (see below), whose sum is σ = 102316032. Its totient is φ = 22506000.

The previous prime is 51328681. The next prime is 51328687. The reversal of 51328684 is 48682315.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51328681) and next prime (51328687).

It is not an unprimeable number, because it can be changed into a prime (51328681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164889 + ... + 165199.

It is an arithmetic number, because the mean of its divisors is an integer number (2131584).

Almost surely, 2^51328684 is an apocalyptic number.

It is an amenable number.

51328684 is a deficient number, since it is larger than the sum of its proper divisors (50987348).

51328684 is a wasteful number, since it uses less digits than its factorization.

51328684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 355 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 51328684 is about 7164.4039528770. The cubic root of 51328684 is about 371.6379392446.

The spelling of 51328684 in words is "fifty-one million, three hundred twenty-eight thousand, six hundred eighty-four".