22557261 has 8 divisors (see below), whose sum is σ = 30232960. Its totient is φ = 14959872.

The previous prime is 22557233. The next prime is 22557263. The reversal of 22557261 is 16275522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22557261 - 2⁵ = 22557229 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 (22557263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18901 + ... + 20058.

It is an arithmetic number, because the mean of its divisors is an integer number (3779120).

Almost surely, 2^22557261 is an apocalyptic number.

It is an amenable number.

22557261 is a deficient number, since it is larger than the sum of its proper divisors (7675699).

22557261 is a wasteful number, since it uses less digits than its factorization.

22557261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39155.

The product of its digits is 8400, while the sum is 30.

The square root of 22557261 is about 4749.4484942991. The cubic root of 22557261 is about 282.5500931870.

The spelling of 22557261 in words is "twenty-two million, five hundred fifty-seven thousand, two hundred sixty-one".