45221976 has 80 divisors (see below), whose sum is σ = 133366200. Its totient is φ = 14276736.

The previous prime is 45221971. The next prime is 45221983. The reversal of 45221976 is 67912254.

It is a super-2 number, since 2×45221976² = 4090054226689152, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 45221976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45221971) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10476 + ... + 14148.

Almost surely, 2^45221976 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 45221976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66683100).

45221976 is an abundant number, since it is smaller than the sum of its proper divisors (88144224).

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

45221976 is a wasteful number, since it uses less digits than its factorization.

45221976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710 (or 3697 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 45221976 is about 6724.7286934121. The cubic root of 45221976 is about 356.2732195392.

The spelling of 45221976 in words is "forty-five million, two hundred twenty-one thousand, nine hundred seventy-six".