45531136 has 60 divisors (see below), whose sum is σ = 104330128. Its totient is φ = 19464192.

The previous prime is 45531119. The next prime is 45531139. The reversal of 45531136 is 63113554.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (45531139) 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, 114490 + ... + 114886.

Almost surely, 2^45531136 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 45531136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52165064).

45531136 is an abundant number, since it is smaller than the sum of its proper divisors (58798992).

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

45531136 is an frugal number, since it uses more digits than its factorization.

45531136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 406 counting only the distinct ones).

The product of its digits is 5400, while the sum is 28.

The square root of 45531136 is about 6747.6763407858. The cubic root of 45531136 is about 357.0832635652.

The spelling of 45531136 in words is "forty-five million, five hundred thirty-one thousand, one hundred thirty-six".