22657601 has 4 divisors (see below), whose sum is σ = 22742100. Its totient is φ = 22573104.

The previous prime is 22657573. The next prime is 22657639. The reversal of 22657601 is 10675622.

It is a Cunningham number, because it is equal to 4760²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10675622 = 2 ⋅5337811.

It can be written as a sum of positive squares in 2 ways, for example, as 1488400 + 21169201 = 1220^2 + 4601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22657601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22657301) 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, 41846 + ... + 42383.

It is an arithmetic number, because the mean of its divisors is an integer number (5685525).

Almost surely, 2^22657601 is an apocalyptic number.

It is an amenable number.

22657601 is a deficient number, since it is larger than the sum of its proper divisors (84499).

22657601 is an equidigital number, since it uses as much as digits as its factorization.

22657601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84498.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 22657601 is about 4760.0001050420. Note that the first 3 decimals coincide. The cubic root of 22657601 is about 282.9684232687.

The spelling of 22657601 in words is "twenty-two million, six hundred fifty-seven thousand, six hundred one".