53772979 has 4 divisors (see below), whose sum is σ = 57909376. Its totient is φ = 49636584.

The previous prime is 53772977. The next prime is 53772991. The reversal of 53772979 is 97927735.

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

It is a cyclic number.

It is not a de Polignac number, because 53772979 - 2¹ = 53772977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53772977) 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, 2068179 + ... + 2068204.

It is an arithmetic number, because the mean of its divisors is an integer number (14477344).

Almost surely, 2^53772979 is an apocalyptic number.

53772979 is a deficient number, since it is larger than the sum of its proper divisors (4136397).

53772979 is a wasteful number, since it uses less digits than its factorization.

53772979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136396.

The product of its digits is 833490, while the sum is 49.

The square root of 53772979 is about 7333.0061366400. The cubic root of 53772979 is about 377.4458884765.

The spelling of 53772979 in words is "fifty-three million, seven hundred seventy-two thousand, nine hundred seventy-nine".