51875188 has 6 divisors (see below), whose sum is σ = 90781586. Its totient is φ = 25937592.

The previous prime is 51875179. The next prime is 51875191. The reversal of 51875188 is 88157815.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28430224 + 23444964 = 5332^2 + 4842^2 .

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, 6484395 + ... + 6484402.

Almost surely, 2^51875188 is an apocalyptic number.

It is an amenable number.

51875188 is a deficient number, since it is larger than the sum of its proper divisors (38906398).

51875188 is a wasteful number, since it uses less digits than its factorization.

51875188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12968801 (or 12968799 counting only the distinct ones).

The product of its digits is 89600, while the sum is 43.

The square root of 51875188 is about 7202.4431965827. The cubic root of 51875188 is about 372.9522468318.

The spelling of 51875188 in words is "fifty-one million, eight hundred seventy-five thousand, one hundred eighty-eight".