222730529 has 6 divisors (see below), whose sum is σ = 259094754. Its totient is φ = 190911840.

The previous prime is 222730517. The next prime is 222730561. The reversal of 222730529 is 925037222.

It can be written as a sum of positive squares in only one way, i.e., 188238400 + 34492129 = 13720^2 + 5873^2 .

It is a de Polignac number, because none of the positive numbers 2^k-222730529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222730495 and 222730504.

It is not an unprimeable number, because it can be changed into a prime (222730589) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2272712 + ... + 2272809.

It is an arithmetic number, because the mean of its divisors is an integer number (43182459).

Almost surely, 2^222730529 is an apocalyptic number.

It is an amenable number.

222730529 is a deficient number, since it is larger than the sum of its proper divisors (36364225).

222730529 is an equidigital number, since it uses as much as digits as its factorization.

222730529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545535 (or 4545528 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 222730529 is about 14924.1592393006. The cubic root of 222730529 is about 606.1683399559.

The spelling of 222730529 in words is "two hundred twenty-two million, seven hundred thirty thousand, five hundred twenty-nine".