51237516 has 24 divisors (see below), whose sum is σ = 130423104. Its totient is φ = 15526480.

The previous prime is 51237493. The next prime is 51237517. The reversal of 51237516 is 61573215.

It is not an unprimeable number, because it can be changed into a prime (51237517) 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, 193950 + ... + 194213.

It is an arithmetic number, because the mean of its divisors is an integer number (5434296).

Almost surely, 2^51237516 is an apocalyptic number.

It is an amenable number.

51237516 is an abundant number, since it is smaller than the sum of its proper divisors (79185588).

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

51237516 is a wasteful number, since it uses less digits than its factorization.

51237516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388181 (or 388179 counting only the distinct ones).

The product of its digits is 6300, while the sum is 30.

The square root of 51237516 is about 7158.0385581526. The cubic root of 51237516 is about 371.4177792581.

The spelling of 51237516 in words is "fifty-one million, two hundred thirty-seven thousand, five hundred sixteen".