635272523 has 4 divisors (see below), whose sum is σ = 635330208. Its totient is φ = 635214840.

The previous prime is 635272511. The next prime is 635272531. The reversal of 635272523 is 325272536.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 635272523 - 2¹⁶ = 635206987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (635272223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6611 + ... + 36252.

It is an arithmetic number, because the mean of its divisors is an integer number (158832552).

Almost surely, 2^635272523 is an apocalyptic number.

635272523 is a deficient number, since it is larger than the sum of its proper divisors (57685).

635272523 is a wasteful number, since it uses less digits than its factorization.

635272523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57684.

The product of its digits is 75600, while the sum is 35.

The square root of 635272523 is about 25204.6131293460. The cubic root of 635272523 is about 859.6467464805.

The spelling of 635272523 in words is "six hundred thirty-five million, two hundred seventy-two thousand, five hundred twenty-three".