222842257 has 8 divisors (see below), whose sum is σ = 249030432. Its totient is φ = 197642400.

The previous prime is 222842227. The next prime is 222842281. The reversal of 222842257 is 752248222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222842257 - 2⁷ = 222842129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222842227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246603 + ... + 247504.

It is an arithmetic number, because the mean of its divisors is an integer number (31128804).

Almost surely, 2^222842257 is an apocalyptic number.

It is an amenable number.

222842257 is a deficient number, since it is larger than the sum of its proper divisors (26188175).

222842257 is a wasteful number, since it uses less digits than its factorization.

222842257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494159.

The product of its digits is 35840, while the sum is 34.

The square root of 222842257 is about 14927.9019624326. The cubic root of 222842257 is about 606.2696801349.

The spelling of 222842257 in words is "two hundred twenty-two million, eight hundred forty-two thousand, two hundred fifty-seven".