45122812 has 12 divisors (see below), whose sum is σ = 90245680. Its totient is φ = 19338336.

The previous prime is 45122807. The next prime is 45122813. The reversal of 45122812 is 21822154.

45122812 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45122813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805737 + ... + 805792.

Almost surely, 2^45122812 is an apocalyptic number.

It is an amenable number.

45122812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

45122812 is a wasteful number, since it uses less digits than its factorization.

45122812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611540 (or 1611538 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 45122812 is about 6717.3515614415. The cubic root of 45122812 is about 356.0126137011.

Adding to 45122812 its reverse (21822154), we get a palindrome (66944966).

The spelling of 45122812 in words is "forty-five million, one hundred twenty-two thousand, eight hundred twelve".