51093904 has 15 divisors (see below), whose sum is σ = 99049867. Its totient is φ = 25532656.

The previous prime is 51093901. The next prime is 51093937. The reversal of 51093904 is 40939015.

The square root of 51093904 is 7148.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×51093904² = 5221174051922432, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51093901) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 27699 + ... + 29485.

Almost surely, 2^51093904 is an apocalyptic number.

51093904 is the 7148-th square number.

It is an amenable number.

51093904 is a deficient number, since it is larger than the sum of its proper divisors (47955963).

51093904 is an frugal number, since it uses more digits than its factorization.

51093904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582 (or 1789 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The cubic root of 51093904 is about 371.0704428591.

The spelling of 51093904 in words is "fifty-one million, ninety-three thousand, nine hundred four".