45000522 has 60 divisors (see below), whose sum is σ = 117317970. Its totient is φ = 12855024.

The previous prime is 45000521. The next prime is 45000563. The reversal of 45000522 is 22500054.

It can be written as a sum of positive squares in only one way, i.e., 42107121 + 2893401 = 6489^2 + 1701^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 45000495 and 45000504.

It is not an unprimeable number, because it can be changed into a prime (45000521) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 5104 + ... + 10772.

Almost surely, 2^45000522 is an apocalyptic number.

45000522 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 45000522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58658985).

45000522 is an abundant number, since it is smaller than the sum of its proper divisors (72317448).

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

45000522 is a wasteful number, since it uses less digits than its factorization.

45000522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5697 (or 5681 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 45000522 is about 6708.2428399693. The cubic root of 45000522 is about 355.6907057758.

Adding to 45000522 its reverse (22500054), we get a palindrome (67500576).

It can be divided in two parts, 4500052 and 2, that added together give a palindrome (4500054).

The spelling of 45000522 in words is "forty-five million, five hundred twenty-two", and thus it is an aban number.