223572997 has 2 divisors, whose sum is σ = 223572998. Its totient is φ = 223572996.

The previous prime is 223572983. The next prime is 223573013. The reversal of 223572997 is 799275322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113763556 + 109809441 = 10666^2 + 10479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223572997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223572697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111786498 + 111786499.

It is an arithmetic number, because the mean of its divisors is an integer number (111786499).

Almost surely, 2^223572997 is an apocalyptic number.

It is an amenable number.

223572997 is a deficient number, since it is larger than the sum of its proper divisors (1).

223572997 is an equidigital number, since it uses as much as digits as its factorization.

223572997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 46.

The square root of 223572997 is about 14952.3575733060. The cubic root of 223572997 is about 606.9316463447.

The spelling of 223572997 in words is "two hundred twenty-three million, five hundred seventy-two thousand, nine hundred ninety-seven".