51905079 has 12 divisors (see below), whose sum is σ = 75063456. Its totient is φ = 34562112.

The previous prime is 51905069. The next prime is 51905123. The reversal of 51905079 is 97050915.

It is a happy number.

It is not a de Polignac number, because 51905079 - 2¹⁷ = 51774007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51905069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5842 + ... + 11744.

It is an arithmetic number, because the mean of its divisors is an integer number (6255288).

Almost surely, 2^51905079 is an apocalyptic number.

51905079 is a deficient number, since it is larger than the sum of its proper divisors (23158377).

51905079 is a wasteful number, since it uses less digits than its factorization.

51905079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6886 (or 6883 counting only the distinct ones).

The product of its (nonzero) digits is 14175, while the sum is 36.

The square root of 51905079 is about 7204.5179575042. The cubic root of 51905079 is about 373.0238660107.

The spelling of 51905079 in words is "fifty-one million, nine hundred five thousand, seventy-nine".