51909124 has 12 divisors (see below), whose sum is σ = 91690704. Its totient is φ = 25711784.

The previous prime is 51909089. The next prime is 51909131. The reversal of 51909124 is 42190915.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60214 + ... + 61069.

It is an arithmetic number, because the mean of its divisors is an integer number (7640892).

Almost surely, 2^51909124 is an apocalyptic number.

It is an amenable number.

51909124 is a deficient number, since it is larger than the sum of its proper divisors (39781580).

51909124 is a wasteful number, since it uses less digits than its factorization.

51909124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121394 (or 121392 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 51909124 is about 7204.7986786586. The cubic root of 51909124 is about 373.0335557647.

The spelling of 51909124 in words is "fifty-one million, nine hundred nine thousand, one hundred twenty-four".