402653171 has 2 divisors, whose sum is σ = 402653172. Its totient is φ = 402653170.

The previous prime is 402653117. The next prime is 402653189. The reversal of 402653171 is 171356204.

Together with previous prime (402653117) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402653171 is a prime.

It is a super-2 number, since 2×402653171² = 324259152232710482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (402652171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201326585 + 201326586.

It is an arithmetic number, because the mean of its divisors is an integer number (201326586).

Almost surely, 2^402653171 is an apocalyptic number.

402653171 is a deficient number, since it is larger than the sum of its proper divisors (1).

402653171 is an equidigital number, since it uses as much as digits as its factorization.

402653171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 402653171 is about 20066.2196489523. The cubic root of 402653171 is about 738.4317720504.

The spelling of 402653171 in words is "four hundred two million, six hundred fifty-three thousand, one hundred seventy-one".