51971795 has 8 divisors (see below), whose sum is σ = 62727696. Its totient is φ = 41336416.

The previous prime is 51971767. The next prime is 51971813. The reversal of 51971795 is 59717915.

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

It is a cyclic number.

It is not a de Polignac number, because 51971795 - 2⁸ = 51971539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29177 + ... + 30906.

It is an arithmetic number, because the mean of its divisors is an integer number (7840962).

Almost surely, 2^51971795 is an apocalyptic number.

51971795 is a deficient number, since it is larger than the sum of its proper divisors (10755901).

51971795 is a wasteful number, since it uses less digits than its factorization.

51971795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60261.

The product of its digits is 99225, while the sum is 44.

The square root of 51971795 is about 7209.1466207867. The cubic root of 51971795 is about 373.1836191966.

The spelling of 51971795 in words is "fifty-one million, nine hundred seventy-one thousand, seven hundred ninety-five".