45221772 has 24 divisors (see below), whose sum is σ = 110105856. Its totient is φ = 14418448.

The previous prime is 45221753. The next prime is 45221791. The reversal of 45221772 is 27712254.

It is an interprime number because it is at equal distance from previous prime (45221753) and next prime (45221791).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81648 + ... + 82199.

It is an arithmetic number, because the mean of its divisors is an integer number (4587744).

Almost surely, 2^45221772 is an apocalyptic number.

It is an amenable number.

45221772 is an abundant number, since it is smaller than the sum of its proper divisors (64884084).

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

45221772 is a wasteful number, since it uses less digits than its factorization.

45221772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163877 (or 163875 counting only the distinct ones).

The product of its digits is 7840, while the sum is 30.

The square root of 45221772 is about 6724.7135254968. The cubic root of 45221772 is about 356.2726838126.

The spelling of 45221772 in words is "forty-five million, two hundred twenty-one thousand, seven hundred seventy-two".