51715982 has 8 divisors (see below), whose sum is σ = 77604696. Its totient is φ = 25847752.

The previous prime is 51715897. The next prime is 51715987. The reversal of 51715982 is 28951715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51715987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6188 + ... + 11904.

It is an arithmetic number, because the mean of its divisors is an integer number (9700587).

Almost surely, 2^51715982 is an apocalyptic number.

51715982 is a deficient number, since it is larger than the sum of its proper divisors (25888714).

51715982 is a wasteful number, since it uses less digits than its factorization.

51715982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10242.

The product of its digits is 25200, while the sum is 38.

The square root of 51715982 is about 7191.3824818320. The cubic root of 51715982 is about 372.5703231944.

The spelling of 51715982 in words is "fifty-one million, seven hundred fifteen thousand, nine hundred eighty-two".