22506573 has 8 divisors (see below), whose sum is σ = 30456928. Its totient is φ = 14780304.

The previous prime is 22506571. The next prime is 22506577. The reversal of 22506573 is 37560522.

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

It is not a de Polignac number, because 22506573 - 2¹ = 22506571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22506573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22506571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55786 + ... + 56187.

It is an arithmetic number, because the mean of its divisors is an integer number (3807116).

Almost surely, 2^22506573 is an apocalyptic number.

It is an amenable number.

22506573 is a deficient number, since it is larger than the sum of its proper divisors (7950355).

22506573 is a wasteful number, since it uses less digits than its factorization.

22506573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112043.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 22506573 is about 4744.1092946938. The cubic root of 22506573 is about 282.3382967869.

The spelling of 22506573 in words is "twenty-two million, five hundred six thousand, five hundred seventy-three".