45169998 has 16 divisors (see below), whose sum is σ = 90841296. Its totient is φ = 14973120.

The previous prime is 45169981. The next prime is 45170029. The reversal of 45169998 is 89996154.

It is a self number, because there is not a number n which added to its sum of digits gives 45169998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19711 + ... + 21882.

It is an arithmetic number, because the mean of its divisors is an integer number (5677581).

Almost surely, 2^45169998 is an apocalyptic number.

45169998 is an abundant number, since it is smaller than the sum of its proper divisors (45671298).

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

45169998 is a wasteful number, since it uses less digits than its factorization.

45169998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41779.

The product of its digits is 699840, while the sum is 51.

The square root of 45169998 is about 6720.8628910282. The cubic root of 45169998 is about 356.1366674277.

The spelling of 45169998 in words is "forty-five million, one hundred sixty-nine thousand, nine hundred ninety-eight".