51240268 has 12 divisors (see below), whose sum is σ = 89729640. Its totient is φ = 25603232.

The previous prime is 51240253. The next prime is 51240307. The reversal of 51240268 is 86204215.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4680 + ... + 11152.

It is an arithmetic number, because the mean of its divisors is an integer number (7477470).

Almost surely, 2^51240268 is an apocalyptic number.

It is an amenable number.

51240268 is a deficient number, since it is larger than the sum of its proper divisors (38489372).

51240268 is a wasteful number, since it uses less digits than its factorization.

51240268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8456 (or 8454 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 51240268 is about 7158.2307870032. The cubic root of 51240268 is about 371.4244288352.

The spelling of 51240268 in words is "fifty-one million, two hundred forty thousand, two hundred sixty-eight".