51247898 has 48 divisors (see below), whose sum is σ = 88402176. Its totient is φ = 22239360.

The previous prime is 51247837. The next prime is 51247919. The reversal of 51247898 is 89874215.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 701990 + ... + 702062.

It is an arithmetic number, because the mean of its divisors is an integer number (1841712).

Almost surely, 2^51247898 is an apocalyptic number.

51247898 is a deficient number, since it is larger than the sum of its proper divisors (37154278).

51247898 is a wasteful number, since it uses less digits than its factorization.

51247898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 186 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The square root of 51247898 is about 7158.7637200846. The cubic root of 51247898 is about 371.4428637357.

The spelling of 51247898 in words is "fifty-one million, two hundred forty-seven thousand, eight hundred ninety-eight".