22552357 has 4 divisors (see below), whose sum is σ = 22566060. Its totient is φ = 22538656.

The previous prime is 22552307. The next prime is 22552381. The reversal of 22552357 is 75325522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75325522 = 2 ⋅37662761.

It can be written as a sum of positive squares in 2 ways, for example, as 9054081 + 13498276 = 3009^2 + 3674^2 .

It is a cyclic number.

It is not a de Polignac number, because 22552357 - 2²³ = 14163749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22552307) 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, 3982 + ... + 7807.

It is an arithmetic number, because the mean of its divisors is an integer number (5641515).

Almost surely, 2^22552357 is an apocalyptic number.

It is an amenable number.

22552357 is a deficient number, since it is larger than the sum of its proper divisors (13703).

22552357 is a wasteful number, since it uses less digits than its factorization.

22552357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13702.

The product of its digits is 21000, while the sum is 31.

The square root of 22552357 is about 4748.9321957678. The cubic root of 22552357 is about 282.5296160247.

Adding to 22552357 its reverse (75325522), we get a palindrome (97877879).

The spelling of 22552357 in words is "twenty-two million, five hundred fifty-two thousand, three hundred fifty-seven".