51275812 has 24 divisors (see below), whose sum is σ = 103307904. Its totient is φ = 21813312.

The previous prime is 51275801. The next prime is 51275827. The reversal of 51275812 is 21857215.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2848 + ... + 10519.

It is an arithmetic number, because the mean of its divisors is an integer number (4304496).

Almost surely, 2^51275812 is an apocalyptic number.

It is an amenable number.

51275812 is an abundant number, since it is smaller than the sum of its proper divisors (52032092).

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

51275812 is a wasteful number, since it uses less digits than its factorization.

51275812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13515 (or 13513 counting only the distinct ones).

The product of its digits is 5600, while the sum is 31.

The square root of 51275812 is about 7160.7130929817. The cubic root of 51275812 is about 371.5102913738.

The spelling of 51275812 in words is "fifty-one million, two hundred seventy-five thousand, eight hundred twelve".