635505253 has 4 divisors (see below), whose sum is σ = 635586048. Its totient is φ = 635424460.

The previous prime is 635505197. The next prime is 635505257. The reversal of 635505253 is 352505536.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 635505253 - 2²¹ = 633408101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635505257) 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 in 3 ways as a sum of consecutive naturals, for example, 27151 + ... + 44812.

It is an arithmetic number, because the mean of its divisors is an integer number (158896512).

Almost surely, 2^635505253 is an apocalyptic number.

It is an amenable number.

635505253 is a deficient number, since it is larger than the sum of its proper divisors (80795).

635505253 is an equidigital number, since it uses as much as digits as its factorization.

635505253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80794.

The product of its (nonzero) digits is 67500, while the sum is 34.

The square root of 635505253 is about 25209.2295201579. The cubic root of 635505253 is about 859.7517099169.

The spelling of 635505253 in words is "six hundred thirty-five million, five hundred five thousand, two hundred fifty-three".