45187722 has 12 divisors (see below), whose sum is σ = 97906770. Its totient is φ = 15062568.

The previous prime is 45187721. The next prime is 45187729. The reversal of 45187722 is 22778154.

It can be written as a sum of positive squares in only one way, i.e., 27973521 + 17214201 = 5289^2 + 4149^2 .

It is not an unprimeable number, because it can be changed into a prime (45187721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1255197 + ... + 1255232.

Almost surely, 2^45187722 is an apocalyptic number.

45187722 is an abundant number, since it is smaller than the sum of its proper divisors (52719048).

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

45187722 is a wasteful number, since it uses less digits than its factorization.

45187722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510437 (or 2510434 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 45187722 is about 6722.1813423918. The cubic root of 45187722 is about 356.1832421540.

The spelling of 45187722 in words is "forty-five million, one hundred eighty-seven thousand, seven hundred twenty-two".