51479478 has 12 divisors (see below), whose sum is σ = 111538908. Its totient is φ = 17159820.

The previous prime is 51479453. The next prime is 51479513. The reversal of 51479478 is 87497415.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1429968 + ... + 1430003.

It is an arithmetic number, because the mean of its divisors is an integer number (9294909).

Almost surely, 2^51479478 is an apocalyptic number.

51479478 is an abundant number, since it is smaller than the sum of its proper divisors (60059430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51479478 is a wasteful number, since it uses less digits than its factorization.

51479478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859979 (or 2859976 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 51479478 is about 7174.9200692412. The cubic root of 51479478 is about 372.0015175103.

The spelling of 51479478 in words is "fifty-one million, four hundred seventy-nine thousand, four hundred seventy-eight".