53864979 has 8 divisors (see below), whose sum is σ = 82080000. Its totient is φ = 30779976.

The previous prime is 53864963. The next prime is 53864999. The reversal of 53864979 is 97946835.

53864979 = 1955² + 1956² + ... + 1968².

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

It is not a de Polignac number, because 53864979 - 2⁴ = 53864963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53864929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1282479 + ... + 1282520.

It is an arithmetic number, because the mean of its divisors is an integer number (10260000).

Almost surely, 2^53864979 is an apocalyptic number.

53864979 is a deficient number, since it is larger than the sum of its proper divisors (28215021).

53864979 is a wasteful number, since it uses less digits than its factorization.

53864979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2565009.

The product of its digits is 1632960, while the sum is 51.

The square root of 53864979 is about 7339.2764629764. The cubic root of 53864979 is about 377.6610227785.

The spelling of 53864979 in words is "fifty-three million, eight hundred sixty-four thousand, nine hundred seventy-nine".