51492279 has 16 divisors (see below), whose sum is σ = 69995520. Its totient is φ = 33664800.

The previous prime is 51492257. The next prime is 51492281. The reversal of 51492279 is 97229415.

It is not a de Polignac number, because 51492279 - 2⁷ = 51492151 is a prime.

It is a super-2 number, since 2×51492279² = 5302909593227682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51492289) 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, 38929 + ... + 40229.

It is an arithmetic number, because the mean of its divisors is an integer number (4374720).

Almost surely, 2^51492279 is an apocalyptic number.

51492279 is a deficient number, since it is larger than the sum of its proper divisors (18503241).

51492279 is a wasteful number, since it uses less digits than its factorization.

51492279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550.

The product of its digits is 45360, while the sum is 39.

The square root of 51492279 is about 7175.8120794792. The cubic root of 51492279 is about 372.0323491928.

The spelling of 51492279 in words is "fifty-one million, four hundred ninety-two thousand, two hundred seventy-nine".