51255432 has 48 divisors (see below), whose sum is σ = 139230000. Its totient is φ = 17034336.

The previous prime is 51255401. The next prime is 51255439. The reversal of 51255432 is 23455215.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51255396 and 51255405.

It is not an unprimeable number, because it can be changed into a prime (51255439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29319 + ... + 31017.

It is an arithmetic number, because the mean of its divisors is an integer number (2900625).

Almost surely, 2^51255432 is an apocalyptic number.

It is an amenable number.

51255432 is an abundant number, since it is smaller than the sum of its proper divisors (87974568).

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

51255432 is a wasteful number, since it uses less digits than its factorization.

51255432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130 (or 2123 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 51255432 is about 7159.2899089225. The cubic root of 51255432 is about 371.4610648947.

The spelling of 51255432 in words is "fifty-one million, two hundred fifty-five thousand, four hundred thirty-two".