373253021 has 2 divisors, whose sum is σ = 373253022. Its totient is φ = 373253020.

The previous prime is 373253017. The next prime is 373253059. The reversal of 373253021 is 120352373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 334377796 + 38875225 = 18286^2 + 6235^2 .

It is a cyclic number.

It is not a de Polignac number, because 373253021 - 2² = 373253017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (373252021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186626510 + 186626511.

It is an arithmetic number, because the mean of its divisors is an integer number (186626511).

Almost surely, 2^373253021 is an apocalyptic number.

It is an amenable number.

373253021 is a deficient number, since it is larger than the sum of its proper divisors (1).

373253021 is an equidigital number, since it uses as much as digits as its factorization.

373253021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 26.

The square root of 373253021 is about 19319.7572707319. The cubic root of 373253021 is about 720.0032285092.

The spelling of 373253021 in words is "three hundred seventy-three million, two hundred fifty-three thousand, twenty-one".