51255078 has 24 divisors (see below), whose sum is σ = 119247192. Its totient is φ = 14644224.

The previous prime is 51255053. The next prime is 51255133. The reversal of 51255078 is 87055215.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86875 + ... + 87462.

It is an arithmetic number, because the mean of its divisors is an integer number (4968633).

Almost surely, 2^51255078 is an apocalyptic number.

51255078 is an abundant number, since it is smaller than the sum of its proper divisors (67992114).

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

51255078 is a wasteful number, since it uses less digits than its factorization.

51255078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174356 (or 174349 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 51255078 is about 7159.2651857575. The cubic root of 51255078 is about 371.4602097169.

The spelling of 51255078 in words is "fifty-one million, two hundred fifty-five thousand, seventy-eight".