22533522 has 64 divisors (see below), whose sum is σ = 51960960. Its totient is φ = 6451200.

The previous prime is 22533509. The next prime is 22533527.

22533522 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×22533522² = 1015519227448968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22533492 and 22533501.

It is not an unprimeable number, because it can be changed into a prime (22533527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116658 + ... + 116850.

It is an arithmetic number, because the mean of its divisors is an integer number (811890).

Almost surely, 2^22533522 is an apocalyptic number.

22533522 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 22533522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25980480).

22533522 is an abundant number, since it is smaller than the sum of its proper divisors (29427438).

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

22533522 is a wasteful number, since it uses less digits than its factorization.

22533522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299.

The product of its digits is 3600, while the sum is 24.

The square root of 22533522 is about 4746.9487041678. The cubic root of 22533522 is about 282.4509409157.

It can be divided in two parts, 2253 and 3522, that added together give a palindrome (5775).

The spelling of 22533522 in words is "twenty-two million, five hundred thirty-three thousand, five hundred twenty-two".