22345553 has 4 divisors (see below), whose sum is σ = 22377780. Its totient is φ = 22313328.

The previous prime is 22345537. The next prime is 22345567. The reversal of 22345553 is 35554322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35554322 = 2 ⋅17777161.

It can be written as a sum of positive squares in 2 ways, for example, as 2879809 + 19465744 = 1697^2 + 4412^2 .

It is a cyclic number.

It is not a de Polignac number, because 22345553 - 2⁴ = 22345537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22345153) 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, 15050 + ... + 16467.

It is an arithmetic number, because the mean of its divisors is an integer number (5594445).

Almost surely, 2^22345553 is an apocalyptic number.

It is an amenable number.

22345553 is a deficient number, since it is larger than the sum of its proper divisors (32227).

22345553 is an equidigital number, since it uses as much as digits as its factorization.

22345553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32226.

The product of its digits is 18000, while the sum is 29.

The square root of 22345553 is about 4727.1083127003. The cubic root of 22345553 is about 281.6633685798.

Adding to 22345553 its reverse (35554322), we get a palindrome (57899875).

The spelling of 22345553 in words is "twenty-two million, three hundred forty-five thousand, five hundred fifty-three".