402353551 has 2 divisors, whose sum is σ = 402353552. Its totient is φ = 402353550.

The previous prime is 402353461. The next prime is 402353561. The reversal of 402353551 is 155353204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402353551 - 2⁷ = 402353423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402353561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201176775 + 201176776.

It is an arithmetic number, because the mean of its divisors is an integer number (201176776).

Almost surely, 2^402353551 is an apocalyptic number.

402353551 is a deficient number, since it is larger than the sum of its proper divisors (1).

402353551 is an equidigital number, since it uses as much as digits as its factorization.

402353551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 402353551 is about 20058.7524786563. The cubic root of 402353551 is about 738.2485673767.

The spelling of 402353551 in words is "four hundred two million, three hundred fifty-three thousand, five hundred fifty-one".