52651998 has 32 divisors (see below), whose sum is σ = 133720320. Its totient is φ = 15043320.

The previous prime is 52651961. The next prime is 52652003. The reversal of 52651998 is 89915625.

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 15 ways as a sum of consecutive naturals, for example, 69268 + ... + 70023.

It is an arithmetic number, because the mean of its divisors is an integer number (4178760).

Almost surely, 2^52651998 is an apocalyptic number.

52651998 is an abundant number, since it is smaller than the sum of its proper divisors (81068322).

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

52651998 is a wasteful number, since it uses less digits than its factorization.

52651998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139309 (or 139303 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 52651998 is about 7256.1696507179. The cubic root of 52651998 is about 374.8046342369.

The spelling of 52651998 in words is "fifty-two million, six hundred fifty-one thousand, nine hundred ninety-eight".