22057013 has 4 divisors (see below), whose sum is σ = 24062208. Its totient is φ = 20051820.

The previous prime is 22056989. The next prime is 22057019. The reversal of 22057013 is 31075022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22057013 - 2⁸ = 22056757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22057019) 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, 1002581 + ... + 1002602.

It is an arithmetic number, because the mean of its divisors is an integer number (6015552).

Almost surely, 2^22057013 is an apocalyptic number.

It is an amenable number.

22057013 is a deficient number, since it is larger than the sum of its proper divisors (2005195).

22057013 is a wasteful number, since it uses less digits than its factorization.

22057013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005194.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 22057013 is about 4696.4894336089. The cubic root of 22057013 is about 280.4457737731.

Subtracting 22057013 from its reverse (31075022), we obtain a square (9018009 = 3003²).

The spelling of 22057013 in words is "twenty-two million, fifty-seven thousand, thirteen".