51474996 has 18 divisors (see below), whose sum is σ = 130117442. Its totient is φ = 17158320.

The previous prime is 51474991. The next prime is 51475013. The reversal of 51474996 is 69947415.

51474996 is a `hidden beast` number, since 514 + 7 + 49 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51322896 + 152100 = 7164^2 + 390^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51474991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 714895 + ... + 714966.

Almost surely, 2^51474996 is an apocalyptic number.

It is an amenable number.

51474996 is an abundant number, since it is smaller than the sum of its proper divisors (78642446).

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

51474996 is a wasteful number, since it uses less digits than its factorization.

51474996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429871 (or 1429866 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 51474996 is about 7174.6077244683. The cubic root of 51474996 is about 371.9907212393.

The spelling of 51474996 in words is "fifty-one million, four hundred seventy-four thousand, nine hundred ninety-six".