222266557 has 4 divisors (see below), whose sum is σ = 222703740. Its totient is φ = 221829376.

The previous prime is 222266533. The next prime is 222266567. The reversal of 222266557 is 755662222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 167417721 + 54848836 = 12939^2 + 7406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222266557 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 (222266507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217828 + ... + 218845.

It is an arithmetic number, because the mean of its divisors is an integer number (55675935).

Almost surely, 2^222266557 is an apocalyptic number.

It is an amenable number.

222266557 is a deficient number, since it is larger than the sum of its proper divisors (437183).

222266557 is an equidigital number, since it uses as much as digits as its factorization.

222266557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437182.

The product of its digits is 100800, while the sum is 37.

The square root of 222266557 is about 14908.6068094910. The cubic root of 222266557 is about 605.7471424178.

The spelling of 222266557 in words is "two hundred twenty-two million, two hundred sixty-six thousand, five hundred fifty-seven".