51989304 has 16 divisors (see below), whose sum is σ = 129973320. Its totient is φ = 17329760.

The previous prime is 51989293. The next prime is 51989317. The reversal of 51989304 is 40398915.

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, 1083087 + ... + 1083134.

Almost surely, 2^51989304 is an apocalyptic number.

It is an amenable number.

51989304 is an abundant number, since it is smaller than the sum of its proper divisors (77984016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51989304 is a wasteful number, since it uses less digits than its factorization.

51989304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166230 (or 2166226 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 51989304 is about 7210.3608786246. The cubic root of 51989304 is about 373.2255222991.

The spelling of 51989304 in words is "fifty-one million, nine hundred eighty-nine thousand, three hundred four".