22545469 has 4 divisors (see below), whose sum is σ = 23154844. Its totient is φ = 21936096.

The previous prime is 22545461. The next prime is 22545503. The reversal of 22545469 is 96454522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10725625 + 11819844 = 3275^2 + 3438^2 .

It is a cyclic number.

It is not a de Polignac number, because 22545469 - 2³ = 22545461 is a prime.

It is a super-2 number, since 2×22545469² = 1016596344859922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 609337 = 22545469 / (2 + 2 + 5 + 4 + 5 + 4 + 6 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22545461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304632 + ... + 304705.

It is an arithmetic number, because the mean of its divisors is an integer number (5788711).

Almost surely, 2^22545469 is an apocalyptic number.

It is an amenable number.

22545469 is a deficient number, since it is larger than the sum of its proper divisors (609375).

22545469 is an equidigital number, since it uses as much as digits as its factorization.

22545469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609374.

The product of its digits is 86400, while the sum is 37.

The square root of 22545469 is about 4748.2069247243. The cubic root of 22545469 is about 282.5008494505.

The spelling of 22545469 in words is "twenty-two million, five hundred forty-five thousand, four hundred sixty-nine".