22997775 has 24 divisors (see below), whose sum is σ = 38211840. Its totient is φ = 12204640.

The previous prime is 22997773. The next prime is 22997789. The reversal of 22997775 is 57779922.

It is not a de Polignac number, because 22997775 - 2¹ = 22997773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22997773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17284 + ... + 18566.

It is an arithmetic number, because the mean of its divisors is an integer number (1592160).

Almost surely, 2^22997775 is an apocalyptic number.

22997775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22997775 is a deficient number, since it is larger than the sum of its proper divisors (15214065).

22997775 is a wasteful number, since it uses less digits than its factorization.

22997775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1530 counting only the distinct ones).

The product of its digits is 555660, while the sum is 48.

The square root of 22997775 is about 4795.5995454166. The cubic root of 22997775 is about 284.3775272488.

The spelling of 22997775 in words is "twenty-two million, nine hundred ninety-seven thousand, seven hundred seventy-five".