51630995 has 16 divisors (see below), whose sum is σ = 66975552. Its totient is φ = 37983360.

The previous prime is 51630979. The next prime is 51631007. The reversal of 51630995 is 59903615.

It is not a de Polignac number, because 51630995 - 2⁴ = 51630979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17690 + ... + 20400.

It is an arithmetic number, because the mean of its divisors is an integer number (4185972).

Almost surely, 2^51630995 is an apocalyptic number.

51630995 is a deficient number, since it is larger than the sum of its proper divisors (15344557).

51630995 is a wasteful number, since it uses less digits than its factorization.

51630995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3022.

The product of its (nonzero) digits is 36450, while the sum is 38.

The square root of 51630995 is about 7185.4711049450. The cubic root of 51630995 is about 372.3661245863.

It can be divided in two parts, 51630 and 995, that added together give a palindrome (52625).

The spelling of 51630995 in words is "fifty-one million, six hundred thirty thousand, nine hundred ninety-five".