22652561 has 4 divisors (see below), whose sum is σ = 22666224. Its totient is φ = 22638900.

The previous prime is 22652527. The next prime is 22652573. The reversal of 22652561 is 16525622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16525622 = 2 ⋅8262811.

It is a cyclic number.

It is not a de Polignac number, because 22652561 - 2¹⁴ = 22636177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22652501) 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, 3935 + ... + 7796.

It is an arithmetic number, because the mean of its divisors is an integer number (5666556).

Almost surely, 2^22652561 is an apocalyptic number.

22652561 is the 2129-th centered decagonal number.

It is an amenable number.

22652561 is a deficient number, since it is larger than the sum of its proper divisors (13663).

22652561 is a wasteful number, since it uses less digits than its factorization.

22652561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13662.

The product of its digits is 7200, while the sum is 29.

The square root of 22652561 is about 4759.4706638449. The cubic root of 22652561 is about 282.9474403675.

The spelling of 22652561 in words is "twenty-two million, six hundred fifty-two thousand, five hundred sixty-one".