45158820 has 96 divisors (see below), whose sum is σ = 152140800. Its totient is φ = 9777024.

The previous prime is 45158819. The next prime is 45158843. The reversal of 45158820 is 2885154.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5151 + ... + 10809.

It is an arithmetic number, because the mean of its divisors is an integer number (1584800).

Almost surely, 2^45158820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45158820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76070400).

45158820 is an abundant number, since it is smaller than the sum of its proper divisors (106981980).

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

45158820 is a wasteful number, since it uses less digits than its factorization.

45158820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5697 (or 5695 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 45158820 is about 6720.0312499273. The cubic root of 45158820 is about 356.1072878670.

The spelling of 45158820 in words is "forty-five million, one hundred fifty-eight thousand, eight hundred twenty".