222457 has 4 divisors (see below), whose sum is σ = 224100. Its totient is φ = 220816.

The previous prime is 222437. The next prime is 222461. The reversal of 222457 is 754222.

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 109561 + 112896 = 331^2 + 336^2 .

It is a cyclic number.

It is not a de Polignac number, because 222457 - 2⁷ = 222329 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (222437) 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, 598 + ... + 895.

It is an arithmetic number, because the mean of its divisors is an integer number (56025).

2²²²⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

222457 is a deficient number, since it is larger than the sum of its proper divisors (1643).

222457 is a wasteful number, since it uses less digits than its factorization.

222457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642.

The product of its digits is 1120, while the sum is 22.

The square root of 222457 is about 471.6534744916. The cubic root of 222457 is about 60.5920098968.

Adding to 222457 its reverse (754222), we get a palindrome (976679).

The spelling of 222457 in words is "two hundred twenty-two thousand, four hundred fifty-seven".