22573557 has 24 divisors (see below), whose sum is σ = 34280064. Its totient is φ = 14286624.

The previous prime is 22573547. The next prime is 22573591. The reversal of 22573557 is 75537522.

It is a happy number.

22573557 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 22573557 - 2⁴ = 22573541 is a prime.

It is a hoax number, since the sum of its digits (36) 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 (22573517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34243 + ... + 34895.

It is an arithmetic number, because the mean of its divisors is an integer number (1428336).

Almost surely, 2^22573557 is an apocalyptic number.

It is an amenable number.

22573557 is a deficient number, since it is larger than the sum of its proper divisors (11706507).

22573557 is a wasteful number, since it uses less digits than its factorization.

22573557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 846 counting only the distinct ones).

The product of its digits is 73500, while the sum is 36.

The square root of 22573557 is about 4751.1637521769. The cubic root of 22573557 is about 282.6181175211.

The spelling of 22573557 in words is "twenty-two million, five hundred seventy-three thousand, five hundred fifty-seven".