635212253 has 4 divisors (see below), whose sum is σ = 684074748. Its totient is φ = 586349760.

The previous prime is 635212223. The next prime is 635212267. The reversal of 635212253 is 352212536.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34128964 + 601083289 = 5842^2 + 24517^2 .

It is a cyclic number.

It is not a de Polignac number, because 635212253 - 2¹⁰ = 635211229 is a prime.

It is a super-2 number, since 2×635212253² = 806989212722672018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635212223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24431228 + ... + 24431253.

It is an arithmetic number, because the mean of its divisors is an integer number (171018687).

Almost surely, 2^635212253 is an apocalyptic number.

It is an amenable number.

635212253 is a deficient number, since it is larger than the sum of its proper divisors (48862495).

635212253 is a wasteful number, since it uses less digits than its factorization.

635212253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48862494.

The product of its digits is 10800, while the sum is 29.

The square root of 635212253 is about 25203.4174865235. The cubic root of 635212253 is about 859.6195599602.

Adding to 635212253 its reverse (352212536), we get a palindrome (987424789).

The spelling of 635212253 in words is "six hundred thirty-five million, two hundred twelve thousand, two hundred fifty-three".