51494412 has 24 divisors (see below), whose sum is σ = 121676800. Its totient is φ = 16947216.

The previous prime is 51494393. The next prime is 51494413. The reversal of 51494412 is 21449415.

It is a self number, because there is not a number n which added to its sum of digits gives 51494412.

It is not an unprimeable number, because it can be changed into a prime (51494413) 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, 26212 + ... + 28107.

Almost surely, 2^51494412 is an apocalyptic number.

It is an amenable number.

51494412 is an abundant number, since it is smaller than the sum of its proper divisors (70182388).

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

51494412 is a wasteful number, since it uses less digits than its factorization.

51494412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54405 (or 54403 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 51494412 is about 7175.9607022335. The cubic root of 51494412 is about 372.0374861057.

The spelling of 51494412 in words is "fifty-one million, four hundred ninety-four thousand, four hundred twelve".