51216294 has 16 divisors (see below), whose sum is σ = 102549168. Its totient is φ = 17052672.

The previous prime is 51216293. The next prime is 51216301. The reversal of 51216294 is 49261215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51216293) 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, 1494 + ... + 10230.

It is an arithmetic number, because the mean of its divisors is an integer number (6409323).

Almost surely, 2^51216294 is an apocalyptic number.

51216294 is an abundant number, since it is smaller than the sum of its proper divisors (51332874).

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

51216294 is a wasteful number, since it uses less digits than its factorization.

51216294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719.

The product of its digits is 4320, while the sum is 30.

The square root of 51216294 is about 7156.5560152912. The cubic root of 51216294 is about 371.3664931614.

The spelling of 51216294 in words is "fifty-one million, two hundred sixteen thousand, two hundred ninety-four".