45221915 has 8 divisors (see below), whose sum is σ = 54315360. Its totient is φ = 36144832.

The previous prime is 45221867. The next prime is 45221971. The reversal of 45221915 is 51912254.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45221915 - 2¹⁰ = 45220891 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3167 + ... + 10023.

It is an arithmetic number, because the mean of its divisors is an integer number (6789420).

Almost surely, 2^45221915 is an apocalyptic number.

45221915 is a deficient number, since it is larger than the sum of its proper divisors (9093445).

45221915 is a wasteful number, since it uses less digits than its factorization.

45221915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8181.

The product of its digits is 3600, while the sum is 29.

The square root of 45221915 is about 6724.7241579116. The cubic root of 45221915 is about 356.2730593466.

The spelling of 45221915 in words is "forty-five million, two hundred twenty-one thousand, nine hundred fifteen".