45751572 has 72 divisors (see below), whose sum is σ = 119857920. Its totient is φ = 14705280.

The previous prime is 45751571. The next prime is 45751579. The reversal of 45751572 is 27515754.

45751572 is a `hidden beast` number, since 4 + 575 + 15 + 72 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45751571) 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, 205053 + ... + 205275.

Almost surely, 2^45751572 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 45751572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59928960).

45751572 is an abundant number, since it is smaller than the sum of its proper divisors (74106348).

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

45751572 is a wasteful number, since it uses less digits than its factorization.

45751572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 408 counting only the distinct ones).

The product of its digits is 49000, while the sum is 36.

The square root of 45751572 is about 6763.9908338199. The cubic root of 45751572 is about 357.6586011196.

The spelling of 45751572 in words is "forty-five million, seven hundred fifty-one thousand, five hundred seventy-two".