51255412 has 48 divisors (see below), whose sum is σ = 102488400. Its totient is φ = 22256640.

The previous prime is 51255401. The next prime is 51255439. The reversal of 51255412 is 21455215.

It can be written as a sum of positive squares in 8 ways, for example, as 8797156 + 42458256 = 2966^2 + 6516^2 .

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 61414 + ... + 62242.

It is an arithmetic number, because the mean of its divisors is an integer number (2135175).

Almost surely, 2^51255412 is an apocalyptic number.

51255412 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51255412 is a deficient number, since it is larger than the sum of its proper divisors (51232988).

51255412 is a wasteful number, since it uses less digits than its factorization.

51255412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 914 counting only the distinct ones).

The product of its digits is 2000, while the sum is 25.

The square root of 51255412 is about 7159.2885121358. The cubic root of 51255412 is about 371.4610165797.

The spelling of 51255412 in words is "fifty-one million, two hundred fifty-five thousand, four hundred twelve".