402255613 has 2 divisors, whose sum is σ = 402255614. Its totient is φ = 402255612.

The previous prime is 402255611. The next prime is 402255617. The reversal of 402255613 is 316552204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382515364 + 19740249 = 19558^2 + 4443^2 .

It is a cyclic number.

It is not a de Polignac number, because 402255613 - 2¹ = 402255611 is a prime.

Together with 402255611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402255611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201127806 + 201127807.

It is an arithmetic number, because the mean of its divisors is an integer number (201127807).

Almost surely, 2^402255613 is an apocalyptic number.

It is an amenable number.

402255613 is a deficient number, since it is larger than the sum of its proper divisors (1).

402255613 is an equidigital number, since it uses as much as digits as its factorization.

402255613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 402255613 is about 20056.3110516366. The cubic root of 402255613 is about 738.1886628017.

The spelling of 402255613 in words is "four hundred two million, two hundred fifty-five thousand, six hundred thirteen".