373223561 has 2 divisors, whose sum is σ = 373223562. Its totient is φ = 373223560.

The previous prime is 373223537. The next prime is 373223573. The reversal of 373223561 is 165322373.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277555600 + 95667961 = 16660^2 + 9781^2 .

It is a cyclic number.

It is not a de Polignac number, because 373223561 - 2⁶ = 373223497 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (373223581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186611780 + 186611781.

It is an arithmetic number, because the mean of its divisors is an integer number (186611781).

Almost surely, 2^373223561 is an apocalyptic number.

It is an amenable number.

373223561 is a deficient number, since it is larger than the sum of its proper divisors (1).

373223561 is an equidigital number, since it uses as much as digits as its factorization.

373223561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 32.

The square root of 373223561 is about 19318.9948237479. The cubic root of 373223561 is about 719.9842852794.

The spelling of 373223561 in words is "three hundred seventy-three million, two hundred twenty-three thousand, five hundred sixty-one".