22064557 has 4 divisors (see below), whose sum is σ = 22278880. Its totient is φ = 21850236.

The previous prime is 22064531. The next prime is 22064569. The reversal of 22064557 is 75546022.

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 22064557 - 2¹⁹ = 21540269 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 (22064587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107007 + ... + 107212.

It is an arithmetic number, because the mean of its divisors is an integer number (5569720).

Almost surely, 2^22064557 is an apocalyptic number.

It is an amenable number.

22064557 is a deficient number, since it is larger than the sum of its proper divisors (214323).

22064557 is a wasteful number, since it uses less digits than its factorization.

22064557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214322.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 22064557 is about 4697.2925180363. The cubic root of 22064557 is about 280.4777430726.

The spelling of 22064557 in words is "twenty-two million, sixty-four thousand, five hundred fifty-seven".