51242456 has 16 divisors (see below), whose sum is σ = 98423640. Its totient is φ = 24996160.

The previous prime is 51242431. The next prime is 51242479. The reversal of 51242456 is 65424215.

It is a congruent number.

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, 77786 + ... + 78441.

Almost surely, 2^51242456 is an apocalyptic number.

It is an amenable number.

51242456 is a deficient number, since it is larger than the sum of its proper divisors (47181184).

51242456 is a wasteful number, since it uses less digits than its factorization.

51242456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156274 (or 156270 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 51242456 is about 7158.3836164319. The cubic root of 51242456 is about 371.4297154656.

The spelling of 51242456 in words is "fifty-one million, two hundred forty-two thousand, four hundred fifty-six".