45221916 has 12 divisors (see below), whose sum is σ = 105517832. Its totient is φ = 15073968.

The previous prime is 45221867. The next prime is 45221971. The reversal of 45221916 is 61912254.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×45221916² = 4090043373422112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1884235 + ... + 1884258.

Almost surely, 2^45221916 is an apocalyptic number.

It is an amenable number.

45221916 is an abundant number, since it is smaller than the sum of its proper divisors (60295916).

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

45221916 is a wasteful number, since it uses less digits than its factorization.

45221916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768500 (or 3768498 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 45221916 is about 6724.7242322641. The cubic root of 45221916 is about 356.2730619727.

The spelling of 45221916 in words is "forty-five million, two hundred twenty-one thousand, nine hundred sixteen".