222557746 has 4 divisors (see below), whose sum is σ = 333836622. Its totient is φ = 111278872.

The previous prime is 222557689. The next prime is 222557747. The reversal of 222557746 is 647755222.

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

It can be written as a sum of positive squares in only one way, i.e., 206066025 + 16491721 = 14355^2 + 4061^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 222557699 and 222557708.

It is not an unprimeable number, because it can be changed into a prime (222557747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55639435 + ... + 55639438.

Almost surely, 2^222557746 is an apocalyptic number.

222557746 is a deficient number, since it is larger than the sum of its proper divisors (111278876).

222557746 is a wasteful number, since it uses less digits than its factorization.

222557746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111278875.

The product of its digits is 235200, while the sum is 40.

The square root of 222557746 is about 14918.3694149193. The cubic root of 222557746 is about 606.0115545655.

The spelling of 222557746 in words is "two hundred twenty-two million, five hundred fifty-seven thousand, seven hundred forty-six".