402550403 has 2 divisors, whose sum is σ = 402550404. Its totient is φ = 402550402.

The previous prime is 402550367. The next prime is 402550453. The reversal of 402550403 is 304055204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402550403 - 2¹⁰ = 402549379 is a prime.

It is not a weakly prime, because it can be changed into another prime (402550453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201275201 + 201275202.

It is an arithmetic number, because the mean of its divisors is an integer number (201275202).

Almost surely, 2^402550403 is an apocalyptic number.

402550403 is a deficient number, since it is larger than the sum of its proper divisors (1).

402550403 is an equidigital number, since it uses as much as digits as its factorization.

402550403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 402550403 is about 20063.6587640440. The cubic root of 402550403 is about 738.3689441058.

The spelling of 402550403 in words is "four hundred two million, five hundred fifty thousand, four hundred three".