45158472 has 80 divisors (see below), whose sum is σ = 127456560. Its totient is φ = 14937696.

The previous prime is 45158441. The next prime is 45158521. The reversal of 45158472 is 27485154.

45158472 is a `hidden beast` number, since 4 + 5 + 1 + 584 + 72 = 666.

It is a super-3 number, since 3×45158472³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 146943 + ... + 147249.

It is an arithmetic number, because the mean of its divisors is an integer number (1593207).

Almost surely, 2^45158472 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 45158472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63728280).

45158472 is an abundant number, since it is smaller than the sum of its proper divisors (82298088).

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

45158472 is a wasteful number, since it uses less digits than its factorization.

45158472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552 (or 539 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 45158472 is about 6720.0053571407. The cubic root of 45158472 is about 356.1063731277.

The spelling of 45158472 in words is "forty-five million, one hundred fifty-eight thousand, four hundred seventy-two".