22572779 has 4 divisors (see below), whose sum is σ = 23760840. Its totient is φ = 21384720.

The previous prime is 22572733. The next prime is 22572791. The reversal of 22572779 is 97727522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22572779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22571779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594002 + ... + 594039.

It is an arithmetic number, because the mean of its divisors is an integer number (5940210).

Almost surely, 2^22572779 is an apocalyptic number.

22572779 is a deficient number, since it is larger than the sum of its proper divisors (1188061).

22572779 is a wasteful number, since it uses less digits than its factorization.

22572779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188060.

The product of its digits is 123480, while the sum is 41.

The square root of 22572779 is about 4751.0818767940. The cubic root of 22572779 is about 282.6148706628.

The spelling of 22572779 in words is "twenty-two million, five hundred seventy-two thousand, seven hundred seventy-nine".