22153550 has 48 divisors (see below), whose sum is σ = 44394480. Its totient is φ = 8194560.

The previous prime is 22153543. The next prime is 22153597. The reversal of 22153550 is 5535122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56756 + ... + 57144.

It is an arithmetic number, because the mean of its divisors is an integer number (924885).

Almost surely, 2^22153550 is an apocalyptic number.

22153550 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

22153550 is a wasteful number, since it uses less digits than its factorization.

22153550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 22153550 is about 4706.7557829146. The cubic root of 22153550 is about 280.8543209628.

Adding to 22153550 its reverse (5535122), we get a palindrome (27688672).

The spelling of 22153550 in words is "twenty-two million, one hundred fifty-three thousand, five hundred fifty".