51312896 has 36 divisors (see below), whose sum is σ = 102993072. Its totient is φ = 25514496.

The previous prime is 51312887. The next prime is 51312913. The reversal of 51312896 is 69821315.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 57671 + ... + 58553.

Almost surely, 2^51312896 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 51312896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51496536).

51312896 is an abundant number, since it is smaller than the sum of its proper divisors (51680176).

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

51312896 is an equidigital number, since it uses as much as digits as its factorization.

51312896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1112 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 51312896 is about 7163.3020318845. The cubic root of 51312896 is about 371.5998317576.

The spelling of 51312896 in words is "fifty-one million, three hundred twelve thousand, eight hundred ninety-six".