51910398 has 12 divisors (see below), whose sum is σ = 112472568. Its totient is φ = 17303460.

The previous prime is 51910381. The next prime is 51910403. The reversal of 51910398 is 89301915.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1441938 + ... + 1441973.

It is an arithmetic number, because the mean of its divisors is an integer number (9372714).

Almost surely, 2^51910398 is an apocalyptic number.

51910398 is an abundant number, since it is smaller than the sum of its proper divisors (60562170).

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

51910398 is a wasteful number, since it uses less digits than its factorization.

51910398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883919 (or 2883916 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 51910398 is about 7204.8870914123. The cubic root of 51910398 is about 373.0366075138.

The spelling of 51910398 in words is "fifty-one million, nine hundred ten thousand, three hundred ninety-eight".