45085578 has 16 divisors (see below), whose sum is σ = 90240480. Its totient is φ = 15016976.

The previous prime is 45085571. The next prime is 45085597. The reversal of 45085578 is 87558054.

It is not an unprimeable number, because it can be changed into a prime (45085571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9976 + ... + 13772.

It is an arithmetic number, because the mean of its divisors is an integer number (5640030).

Almost surely, 2^45085578 is an apocalyptic number.

45085578 is an abundant number, since it is smaller than the sum of its proper divisors (45154902).

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

45085578 is a wasteful number, since it uses less digits than its factorization.

45085578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5781.

The product of its (nonzero) digits is 224000, while the sum is 42.

The square root of 45085578 is about 6714.5795102895. The cubic root of 45085578 is about 355.9146630871.

The spelling of 45085578 in words is "forty-five million, eighty-five thousand, five hundred seventy-eight".