402255461 has 2 divisors, whose sum is σ = 402255462. Its totient is φ = 402255460.

The previous prime is 402255443. The next prime is 402255463. The reversal of 402255461 is 164552204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 374229025 + 28026436 = 19345^2 + 5294^2 .

It is a cyclic number.

It is not a de Polignac number, because 402255461 - 2⁶ = 402255397 is a prime.

Together with 402255463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402255463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201127730 + 201127731.

It is an arithmetic number, because the mean of its divisors is an integer number (201127731).

Almost surely, 2^402255461 is an apocalyptic number.

It is an amenable number.

402255461 is a deficient number, since it is larger than the sum of its proper divisors (1).

402255461 is an equidigital number, since it uses as much as digits as its factorization.

402255461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 402255461 is about 20056.3072623053. The cubic root of 402255461 is about 738.1885698221.

The spelling of 402255461 in words is "four hundred two million, two hundred fifty-five thousand, four hundred sixty-one".