222657601 has 4 divisors (see below), whose sum is σ = 228675412. Its totient is φ = 216639792.

The previous prime is 222657587. The next prime is 222657613. The reversal of 222657601 is 106756222.

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 113976976 + 108680625 = 10676^2 + 10425^2 .

It is a cyclic number.

It is not a de Polignac number, because 222657601 - 2¹⁵ = 222624833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222657301) 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, 3008850 + ... + 3008923.

It is an arithmetic number, because the mean of its divisors is an integer number (57168853).

Almost surely, 2^222657601 is an apocalyptic number.

It is an amenable number.

222657601 is a deficient number, since it is larger than the sum of its proper divisors (6017811).

222657601 is an equidigital number, since it uses as much as digits as its factorization.

222657601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6017810.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 222657601 is about 14921.7157525534. The cubic root of 222657601 is about 606.1021740968.

The spelling of 222657601 in words is "two hundred twenty-two million, six hundred fifty-seven thousand, six hundred one".