45117880 has 16 divisors (see below), whose sum is σ = 101515320. Its totient is φ = 18047136.

The previous prime is 45117797. The next prime is 45117883. The reversal of 45117880 is 8871154.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45117883) 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, 563934 + ... + 564013.

Almost surely, 2^45117880 is an apocalyptic number.

45117880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45117880 is an abundant number, since it is smaller than the sum of its proper divisors (56397440).

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

45117880 is a wasteful number, since it uses less digits than its factorization.

45117880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127958 (or 1127954 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 45117880 is about 6716.9844424414. The cubic root of 45117880 is about 355.9996423007. Note that the first 3 decimals are identical.

The spelling of 45117880 in words is "forty-five million, one hundred seventeen thousand, eight hundred eighty".