22500522 has 48 divisors (see below), whose sum is σ = 55991520. Its totient is φ = 6458400.

The previous prime is 22500497. The next prime is 22500547.

22500522 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (22500497) and next prime (22500547).

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 = 22500495 and 22500504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 772 + ... + 6752.

It is an arithmetic number, because the mean of its divisors is an integer number (1166490).

Almost surely, 2^22500522 is an apocalyptic number.

22500522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 22500522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27995760).

22500522 is an abundant number, since it is smaller than the sum of its proper divisors (33490998).

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

22500522 is a wasteful number, since it uses less digits than its factorization.

22500522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6019 (or 6016 counting only the distinct ones).

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

The square root of 22500522 is about 4743.4715135647. The cubic root of 22500522 is about 282.3129918510.

The spelling of 22500522 in words is "twenty-two million, five hundred thousand, five hundred twenty-two".