45185520 has 40 divisors (see below), whose sum is σ = 140075856. Its totient is φ = 12049408.

The previous prime is 45185489. The next prime is 45185531. The reversal of 45185520 is 2558154.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 93897 + ... + 94376.

Almost surely, 2^45185520 is an apocalyptic number.

45185520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45185520 is an abundant number, since it is smaller than the sum of its proper divisors (94890336).

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

45185520 is a wasteful number, since it uses less digits than its factorization.

45185520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188289 (or 188283 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 45185520 is about 6722.0175542764. The cubic root of 45185520 is about 356.1774564508.

The spelling of 45185520 in words is "forty-five million, one hundred eighty-five thousand, five hundred twenty".