245352013 has 4 divisors (see below), whose sum is σ = 245384188. Its totient is φ = 245319840.

The previous prime is 245351983. The next prime is 245352043. The reversal of 245352013 is 310253542.

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 an interprime number because it is at equal distance from previous prime (245351983) and next prime (245352043).

It can be written as a sum of positive squares in 2 ways, for example, as 168298729 + 77053284 = 12973^2 + 8778^2 .

It is a cyclic number.

It is not a de Polignac number, because 245352013 - 2⁹ = 245351501 is a prime.

It is a super-2 number, since 2×245352013² = 120395220566304338, 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 (245352043) 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, 2545 + ... + 22297.

It is an arithmetic number, because the mean of its divisors is an integer number (61346047).

Almost surely, 2^245352013 is an apocalyptic number.

It is an amenable number.

245352013 is a deficient number, since it is larger than the sum of its proper divisors (32175).

245352013 is a wasteful number, since it uses less digits than its factorization.

245352013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32174.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 245352013 is about 15663.7164491700. The cubic root of 245352013 is about 626.0320127416.

The spelling of 245352013 in words is "two hundred forty-five million, three hundred fifty-two thousand, thirteen".