51898402 has 8 divisors (see below), whose sum is σ = 80358912. Its totient is φ = 25112100.

The previous prime is 51898381. The next prime is 51898403. The reversal of 51898402 is 20489815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51898403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418474 + ... + 418597.

It is an arithmetic number, because the mean of its divisors is an integer number (10044864).

Almost surely, 2^51898402 is an apocalyptic number.

51898402 is a deficient number, since it is larger than the sum of its proper divisors (28460510).

51898402 is a wasteful number, since it uses less digits than its factorization.

51898402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837104.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 51898402 is about 7204.0545528195. The cubic root of 51898402 is about 373.0078702276.

The spelling of 51898402 in words is "fifty-one million, eight hundred ninety-eight thousand, four hundred two".