45272164 has 48 divisors (see below), whose sum is σ = 94227840. Its totient is φ = 18627840.

The previous prime is 45272141. The next prime is 45272167. The reversal of 45272164 is 46127254.

It is not an unprimeable number, because it can be changed into a prime (45272167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91959 + ... + 92449.

It is an arithmetic number, because the mean of its divisors is an integer number (1963080).

Almost surely, 2^45272164 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 45272164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47113920).

45272164 is an abundant number, since it is smaller than the sum of its proper divisors (48955676).

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

45272164 is a wasteful number, since it uses less digits than its factorization.

45272164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 626 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 45272164 is about 6728.4592589983. The cubic root of 45272164 is about 356.4049698611.

The spelling of 45272164 in words is "forty-five million, two hundred seventy-two thousand, one hundred sixty-four".