22555239 has 12 divisors (see below), whose sum is σ = 34983864. Its totient is φ = 12888624.

The previous prime is 22555231. The next prime is 22555241. The reversal of 22555239 is 93255522.

It is not a de Polignac number, because 22555239 - 2³ = 22555231 is a prime.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22555231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76572 + ... + 76865.

It is an arithmetic number, because the mean of its divisors is an integer number (2915322).

Almost surely, 2^22555239 is an apocalyptic number.

22555239 is a deficient number, since it is larger than the sum of its proper divisors (12428625).

22555239 is a wasteful number, since it uses less digits than its factorization.

22555239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153454 (or 153447 counting only the distinct ones).

The product of its digits is 27000, while the sum is 33.

The square root of 22555239 is about 4749.2356227081. The cubic root of 22555239 is about 282.5416504752.

The spelling of 22555239 in words is "twenty-two million, five hundred fifty-five thousand, two hundred thirty-nine".