51240922 has 4 divisors (see below), whose sum is σ = 76861386. Its totient is φ = 25620460.

The previous prime is 51240911. The next prime is 51240953. The reversal of 51240922 is 22904215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 45144961 + 6095961 = 6719^2 + 2469^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12810229 + ... + 12810232.

Almost surely, 2^51240922 is an apocalyptic number.

51240922 is a deficient number, since it is larger than the sum of its proper divisors (25620464).

51240922 is a wasteful number, since it uses less digits than its factorization.

51240922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25620463.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51240922 is about 7158.2764685363. The cubic root of 51240922 is about 371.4260090412.

The spelling of 51240922 in words is "fifty-one million, two hundred forty thousand, nine hundred twenty-two".