51040456 has 8 divisors (see below), whose sum is σ = 95700870. Its totient is φ = 25520224.

The previous prime is 51040433. The next prime is 51040471. The reversal of 51040456 is 65404015.

It can be written as a sum of positive squares in only one way, i.e., 44435556 + 6604900 = 6666^2 + 2570^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 51040456.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3190021 + ... + 3190036.

Almost surely, 2^51040456 is an apocalyptic number.

It is an amenable number.

51040456 is a deficient number, since it is larger than the sum of its proper divisors (44660414).

51040456 is a wasteful number, since it uses less digits than its factorization.

51040456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6380063 (or 6380059 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 51040456 is about 7144.2603535985. The cubic root of 51040456 is about 370.9410086796.

The spelling of 51040456 in words is "fifty-one million, forty thousand, four hundred fifty-six".