45222500 has 30 divisors (see below), whose sum is σ = 98898030. Its totient is φ = 18088000.

The previous prime is 45222493. The next prime is 45222509. The reversal of 45222500 is 522254.

It can be written as a sum of positive squares in 5 ways, for example, as 7963684 + 37258816 = 2822^2 + 6104^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (45222509) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6545 + ... + 11544.

It is an arithmetic number, because the mean of its divisors is an integer number (3296601).

Almost surely, 2^45222500 is an apocalyptic number.

It is an amenable number.

45222500 is an abundant number, since it is smaller than the sum of its proper divisors (53675530).

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

45222500 is a wasteful number, since it uses less digits than its factorization.

45222500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18113 (or 18096 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 45222500 is about 6724.7676539788. The cubic root of 45222500 is about 356.2745956139.

Adding to 45222500 its reverse (522254), we get a palindrome (45744754).

The spelling of 45222500 in words is "forty-five million, two hundred twenty-two thousand, five hundred".