51979953 has 16 divisors (see below), whose sum is σ = 73684800. Its totient is φ = 32500800.

The previous prime is 51979951. The next prime is 51980009. The reversal of 51979953 is 35997915.

It is not a de Polignac number, because 51979953 - 2¹ = 51979951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51979951) 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, 1243 + ... + 10271.

It is an arithmetic number, because the mean of its divisors is an integer number (4605300).

Almost surely, 2^51979953 is an apocalyptic number.

It is an amenable number.

51979953 is a deficient number, since it is larger than the sum of its proper divisors (21704847).

51979953 is a wasteful number, since it uses less digits than its factorization.

51979953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9152.

The product of its digits is 382725, while the sum is 48.

The square root of 51979953 is about 7209.7124075791. The cubic root of 51979953 is about 373.2031443556.

The spelling of 51979953 in words is "fifty-one million, nine hundred seventy-nine thousand, nine hundred fifty-three".