52939979 has 4 divisors (see below), whose sum is σ = 54231240. Its totient is φ = 51648720.

The previous prime is 52939969. The next prime is 52939987. The reversal of 52939979 is 97993925.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52939979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52939979.

It is not an unprimeable number, because it can be changed into a prime (52939919) 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, 645569 + ... + 645650.

It is an arithmetic number, because the mean of its divisors is an integer number (13557810).

Almost surely, 2^52939979 is an apocalyptic number.

52939979 is a deficient number, since it is larger than the sum of its proper divisors (1291261).

52939979 is a wasteful number, since it uses less digits than its factorization.

52939979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291260.

The product of its digits is 1377810, while the sum is 53.

The square root of 52939979 is about 7275.9864623294. The cubic root of 52939979 is about 375.4867256181.

The spelling of 52939979 in words is "fifty-two million, nine hundred thirty-nine thousand, nine hundred seventy-nine".