51895464 has 32 divisors (see below), whose sum is σ = 130429440. Its totient is φ = 17206400.

The previous prime is 51895447. The next prime is 51895469. The reversal of 51895464 is 46459815.

It is not an unprimeable number, because it can be changed into a prime (51895469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077 + ... + 10244.

It is an arithmetic number, because the mean of its divisors is an integer number (4075920).

Almost surely, 2^51895464 is an apocalyptic number.

It is an amenable number.

51895464 is an abundant number, since it is smaller than the sum of its proper divisors (78533976).

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

51895464 is a wasteful number, since it uses less digits than its factorization.

51895464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11521 (or 11517 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 51895464 is about 7203.8506369858. The cubic root of 51895464 is about 373.0008313609. Note that the first 3 decimals are identical.

The spelling of 51895464 in words is "fifty-one million, eight hundred ninety-five thousand, four hundred sixty-four".