51994508 has 12 divisors (see below), whose sum is σ = 91104720. Its totient is φ = 25964592.

The previous prime is 51994489. The next prime is 51994511. The reversal of 51994508 is 80549915.

It is a happy 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, 4391 + ... + 11102.

It is an arithmetic number, because the mean of its divisors is an integer number (7592060).

Almost surely, 2^51994508 is an apocalyptic number.

It is an amenable number.

51994508 is a deficient number, since it is larger than the sum of its proper divisors (39110212).

51994508 is a wasteful number, since it uses less digits than its factorization.

51994508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16336 (or 16334 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 51994508 is about 7210.7217391881. The cubic root of 51994508 is about 373.2379748657.

The spelling of 51994508 in words is "fifty-one million, nine hundred ninety-four thousand, five hundred eight".