245634253 has 4 divisors (see below), whose sum is σ = 245913948. Its totient is φ = 245354560.

The previous prime is 245634211. The next prime is 245634281. The reversal of 245634253 is 352436542.

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 19342404 + 226291849 = 4398^2 + 15043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245634253 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 (245634283) 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, 138526 + ... + 140287.

It is an arithmetic number, because the mean of its divisors is an integer number (61478487).

Almost surely, 2^245634253 is an apocalyptic number.

It is an amenable number.

245634253 is a deficient number, since it is larger than the sum of its proper divisors (279695).

245634253 is an equidigital number, since it uses as much as digits as its factorization.

245634253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279694.

The product of its digits is 86400, while the sum is 34.

The square root of 245634253 is about 15672.7232158295. The cubic root of 245634253 is about 626.2719721429.

The spelling of 245634253 in words is "two hundred forty-five million, six hundred thirty-four thousand, two hundred fifty-three".