51237312 has 112 divisors (see below), whose sum is σ = 157520640. Its totient is φ = 14395392.

The previous prime is 51237293. The next prime is 51237317. The reversal of 51237312 is 21373215.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51237317) 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 15 ways as a sum of consecutive naturals, for example, 89764 + ... + 90332.

Almost surely, 2^51237312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51237312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78760320).

51237312 is an abundant number, since it is smaller than the sum of its proper divisors (106283328).

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

51237312 is a wasteful number, since it uses less digits than its factorization.

51237312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 648 counting only the distinct ones).

The product of its digits is 1260, while the sum is 24.

The square root of 51237312 is about 7158.0243084248. The cubic root of 51237312 is about 371.4172863294.

The spelling of 51237312 in words is "fifty-one million, two hundred thirty-seven thousand, three hundred twelve".