222404057 has 4 divisors (see below), whose sum is σ = 222779700. Its totient is φ = 222028416.

The previous prime is 222404053. The next prime is 222404069. The reversal of 222404057 is 750404222.

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 57820816 + 164583241 = 7604^2 + 12829^2 .

It is a cyclic number.

It is not a de Polignac number, because 222404057 - 2² = 222404053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222404053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186932 + ... + 188117.

It is an arithmetic number, because the mean of its divisors is an integer number (55694925).

Almost surely, 2^222404057 is an apocalyptic number.

It is an amenable number.

222404057 is a deficient number, since it is larger than the sum of its proper divisors (375643).

222404057 is an equidigital number, since it uses as much as digits as its factorization.

222404057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375642.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 222404057 is about 14913.2175267445. The cubic root of 222404057 is about 605.8720270966.

Adding to 222404057 its reverse (750404222), we get a palindrome (972808279).

The spelling of 222404057 in words is "two hundred twenty-two million, four hundred four thousand, fifty-seven".