402554461 has 2 divisors, whose sum is σ = 402554462. Its totient is φ = 402554460.

The previous prime is 402554459. The next prime is 402554489. The reversal of 402554461 is 164455204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 361722361 + 40832100 = 19019^2 + 6390^2 .

It is a cyclic number.

It is not a de Polignac number, because 402554461 - 2¹ = 402554459 is a prime.

Together with 402554459, 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 (402554491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201277230 + 201277231.

It is an arithmetic number, because the mean of its divisors is an integer number (201277231).

Almost surely, 2^402554461 is an apocalyptic number.

It is an amenable number.

402554461 is a deficient number, since it is larger than the sum of its proper divisors (1).

402554461 is an equidigital number, since it uses as much as digits as its factorization.

402554461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 402554461 is about 20063.7598919046. The cubic root of 402554461 is about 738.3714251956.

The spelling of 402554461 in words is "four hundred two million, five hundred fifty-four thousand, four hundred sixty-one".