51979047 has 8 divisors (see below), whose sum is σ = 73382256. Its totient is φ = 32614272.

The previous prime is 51979019. The next prime is 51979051. The reversal of 51979047 is 74097915.

It is a happy number.

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

It is not a de Polignac number, because 51979047 - 2⁸ = 51978791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51979547) 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, 509548 + ... + 509649.

It is an arithmetic number, because the mean of its divisors is an integer number (9172782).

Almost surely, 2^51979047 is an apocalyptic number.

51979047 is a deficient number, since it is larger than the sum of its proper divisors (21403209).

51979047 is a wasteful number, since it uses less digits than its factorization.

51979047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019217.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 51979047 is about 7209.6495753955. The cubic root of 51979047 is about 373.2009760580.

The spelling of 51979047 in words is "fifty-one million, nine hundred seventy-nine thousand, forty-seven".