51291474 has 16 divisors (see below), whose sum is σ = 110474112. Its totient is φ = 15781968.

The previous prime is 51291433. The next prime is 51291497. The reversal of 51291474 is 47419215.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328714 + ... + 328869.

It is an arithmetic number, because the mean of its divisors is an integer number (6904632).

Almost surely, 2^51291474 is an apocalyptic number.

51291474 is an abundant number, since it is smaller than the sum of its proper divisors (59182638).

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

51291474 is a wasteful number, since it uses less digits than its factorization.

51291474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657601.

The product of its digits is 10080, while the sum is 33.

The square root of 51291474 is about 7161.8066156522. The cubic root of 51291474 is about 371.5481129875.

The spelling of 51291474 in words is "fifty-one million, two hundred ninety-one thousand, four hundred seventy-four".