51408944 has 10 divisors (see below), whose sum is σ = 99604860. Its totient is φ = 25704464.

The previous prime is 51408937. The next prime is 51408953. The reversal of 51408944 is 44980415.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1606514 + ... + 1606545.

It is an arithmetic number, because the mean of its divisors is an integer number (9960486).

Almost surely, 2^51408944 is an apocalyptic number.

It is an amenable number.

51408944 is a deficient number, since it is larger than the sum of its proper divisors (48195916).

51408944 is a wasteful number, since it uses less digits than its factorization.

51408944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213067 (or 3213061 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 51408944 is about 7170.0030683397. The cubic root of 51408944 is about 371.8315420252.

The spelling of 51408944 in words is "fifty-one million, four hundred eight thousand, nine hundred forty-four".