45217812 has 24 divisors (see below), whose sum is σ = 106271200. Its totient is φ = 14963616.

The previous prime is 45217789. The next prime is 45217877. The reversal of 45217812 is 21871254.

It is a self number, because there is not a number n which added to its sum of digits gives 45217812.

It is a congruent number.

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, 11887 + ... + 15222.

Almost surely, 2^45217812 is an apocalyptic number.

It is an amenable number.

45217812 is an abundant number, since it is smaller than the sum of its proper divisors (61053388).

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

45217812 is a wasteful number, since it uses less digits than its factorization.

45217812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27255 (or 27253 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 45217812 is about 6724.4190827164. The cubic root of 45217812 is about 356.2622840947.

The spelling of 45217812 in words is "forty-five million, two hundred seventeen thousand, eight hundred twelve".