51984579 has 4 divisors (see below), whose sum is σ = 69312776. Its totient is φ = 34656384.

The previous prime is 51984533. The next prime is 51984641. The reversal of 51984579 is 97548915.

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

It is not a de Polignac number, because 51984579 - 2¹¹ = 51982531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51984479) 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, 8664094 + ... + 8664099.

It is an arithmetic number, because the mean of its divisors is an integer number (17328194).

Almost surely, 2^51984579 is an apocalyptic number.

51984579 is a deficient number, since it is larger than the sum of its proper divisors (17328197).

51984579 is a wasteful number, since it uses less digits than its factorization.

51984579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17328196.

The product of its digits is 453600, while the sum is 48.

The square root of 51984579 is about 7210.0332176766. The cubic root of 51984579 is about 373.2142152039.

The spelling of 51984579 in words is "fifty-one million, nine hundred eighty-four thousand, five hundred seventy-nine".