22553939 has 4 divisors (see below), whose sum is σ = 22668624. Its totient is φ = 22439256.

The previous prime is 22553933. The next prime is 22553941. The reversal of 22553939 is 93935522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93935522 = 2 ⋅46967761.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22553939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22553933) 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 3 ways as a sum of consecutive naturals, for example, 57047 + ... + 57440.

It is an arithmetic number, because the mean of its divisors is an integer number (5667156).

Almost surely, 2^22553939 is an apocalyptic number.

22553939 is a deficient number, since it is larger than the sum of its proper divisors (114685).

22553939 is a wasteful number, since it uses less digits than its factorization.

22553939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114684.

The product of its digits is 72900, while the sum is 38.

The square root of 22553939 is about 4749.0987566064. The cubic root of 22553939 is about 282.5362221547.

The spelling of 22553939 in words is "twenty-two million, five hundred fifty-three thousand, nine hundred thirty-nine".