22840557 has 4 divisors (see below), whose sum is σ = 30454080. Its totient is φ = 15227036.

The previous prime is 22840547. The next prime is 22840591. The reversal of 22840557 is 75504822.

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 22840557 - 2¹⁴ = 22824173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22840547) 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, 3806757 + ... + 3806762.

It is an arithmetic number, because the mean of its divisors is an integer number (7613520).

Almost surely, 2^22840557 is an apocalyptic number.

It is an amenable number.

22840557 is a deficient number, since it is larger than the sum of its proper divisors (7613523).

22840557 is an equidigital number, since it uses as much as digits as its factorization.

22840557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7613522.

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 22840557 is about 4779.1795320954. The cubic root of 22840557 is about 283.7280218702.

The spelling of 22840557 in words is "twenty-two million, eight hundred forty thousand, five hundred fifty-seven".