402652171 has 2 divisors, whose sum is σ = 402652172. Its totient is φ = 402652170.

The previous prime is 402652169. The next prime is 402652231. The reversal of 402652171 is 171256204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402652171 - 2¹ = 402652169 is a prime.

It is a super-2 number, since 2×402652171² = 324257541622026482, which contains 22 as substring.

Together with 402652169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (402652771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201326085 + 201326086.

It is an arithmetic number, because the mean of its divisors is an integer number (201326086).

Almost surely, 2^402652171 is an apocalyptic number.

402652171 is a deficient number, since it is larger than the sum of its proper divisors (1).

402652171 is an equidigital number, since it uses as much as digits as its factorization.

402652171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 402652171 is about 20066.1947314382. The cubic root of 402652171 is about 738.4311607449.

It can be divided in two parts, 40265 and 2171, that added together give a square (42436 = 206²).

The spelling of 402652171 in words is "four hundred two million, six hundred fifty-two thousand, one hundred seventy-one".