22026557 has 4 divisors (see below), whose sum is σ = 25173216. Its totient is φ = 18879900.

The previous prime is 22026547. The next prime is 22026569. The reversal of 22026557 is 75562022.

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 22026557 - 2⁴ = 22026541 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 (22026517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1573319 + ... + 1573332.

It is an arithmetic number, because the mean of its divisors is an integer number (6293304).

Almost surely, 2^22026557 is an apocalyptic number.

It is an amenable number.

22026557 is a deficient number, since it is larger than the sum of its proper divisors (3146659).

22026557 is an equidigital number, since it uses as much as digits as its factorization.

22026557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3146658.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 22026557 is about 4693.2458917044. The cubic root of 22026557 is about 280.3166358474.

Adding to 22026557 its reverse (75562022), we get a palindrome (97588579).

The spelling of 22026557 in words is "twenty-two million, twenty-six thousand, five hundred fifty-seven".