45158890 has 48 divisors (see below), whose sum is σ = 98692992. Its totient is φ = 14806176.

The previous prime is 45158863. The next prime is 45158891. The reversal of 45158890 is 9885154.

It is not an unprimeable number, because it can be changed into a prime (45158891) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9267 + ... + 13273.

It is an arithmetic number, because the mean of its divisors is an integer number (2056104).

Almost surely, 2^45158890 is an apocalyptic number.

45158890 is an abundant number, since it is smaller than the sum of its proper divisors (53534102).

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

45158890 is a wasteful number, since it uses less digits than its factorization.

45158890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051 (or 4044 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 45158890 is about 6720.0364582344. The cubic root of 45158890 is about 356.1074718658.

The spelling of 45158890 in words is "forty-five million, one hundred fifty-eight thousand, eight hundred ninety".