635042201 has 2 divisors, whose sum is σ = 635042202. Its totient is φ = 635042200.

The previous prime is 635042197. The next prime is 635042249. The reversal of 635042201 is 102240536.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338376025 + 296666176 = 18395^2 + 17224^2 .

It is a cyclic number.

It is not a de Polignac number, because 635042201 - 2² = 635042197 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (635047201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317521100 + 317521101.

It is an arithmetic number, because the mean of its divisors is an integer number (317521101).

Almost surely, 2^635042201 is an apocalyptic number.

It is an amenable number.

635042201 is a deficient number, since it is larger than the sum of its proper divisors (1).

635042201 is an equidigital number, since it uses as much as digits as its factorization.

635042201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 635042201 is about 25200.0436705971. The cubic root of 635042201 is about 859.5428438331.

Adding to 635042201 its reverse (102240536), we get a palindrome (737282737).

The spelling of 635042201 in words is "six hundred thirty-five million, forty-two thousand, two hundred one".