22361550 has 24 divisors (see below), whose sum is σ = 55457016. Its totient is φ = 5963040.

The previous prime is 22361539. The next prime is 22361567. The reversal of 22361550 is 5516322.

It is a self number, because there is not a number n which added to its sum of digits gives 22361550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74389 + ... + 74688.

It is an arithmetic number, because the mean of its divisors is an integer number (2310709).

Almost surely, 2^22361550 is an apocalyptic number.

22361550 is an abundant number, since it is smaller than the sum of its proper divisors (33095466).

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

22361550 is a wasteful number, since it uses less digits than its factorization.

22361550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149092 (or 149087 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 22361550 is about 4728.8000592116. The cubic root of 22361550 is about 281.7305660534.

Adding to 22361550 its reverse (5516322), we get a palindrome (27877872).

The spelling of 22361550 in words is "twenty-two million, three hundred sixty-one thousand, five hundred fifty".