22499955 has 36 divisors (see below), whose sum is σ = 40577472. Its totient is φ = 11521440.

The previous prime is 22499941. The next prime is 22499963. The reversal of 22499955 is 55999422.

It is not a de Polignac number, because 22499955 - 2⁹ = 22499443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 22499955.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 177102 + ... + 177228.

It is an arithmetic number, because the mean of its divisors is an integer number (1127152).

Almost surely, 2^22499955 is an apocalyptic number.

22499955 is a deficient number, since it is larger than the sum of its proper divisors (18077517).

22499955 is a wasteful number, since it uses less digits than its factorization.

22499955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296 (or 166 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 22499955 is about 4743.4117468337. The cubic root of 22499955 is about 282.3106204570.

It can be divided in two parts, 2249995 and 5, that added together give a square (2250000 = 1500²).

The spelling of 22499955 in words is "twenty-two million, four hundred ninety-nine thousand, nine hundred fifty-five".