26557222 has 4 divisors (see below), whose sum is σ = 39835836. Its totient is φ = 13278610.

The previous prime is 26557207. The next prime is 26557241. The reversal of 26557222 is 22275562.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6639304 + ... + 6639307.

It is an arithmetic number, because the mean of its divisors is an integer number (9958959).

Almost surely, 2^26557222 is an apocalyptic number.

26557222 is a deficient number, since it is larger than the sum of its proper divisors (13278614).

26557222 is a wasteful number, since it uses less digits than its factorization.

26557222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13278613.

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

The square root of 26557222 is about 5153.3699653722. The cubic root of 26557222 is about 298.3510344632.

The spelling of 26557222 in words is "twenty-six million, five hundred fifty-seven thousand, two hundred twenty-two".