402563161 has 32 divisors (see below), whose sum is σ = 542400768. Its totient is φ = 288541440.

The previous prime is 402563159. The next prime is 402563173. The reversal of 402563161 is 161365204.

It is not a de Polignac number, because 402563161 - 2¹ = 402563159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402564161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 396891 + ... + 397903.

It is an arithmetic number, because the mean of its divisors is an integer number (16950024).

Almost surely, 2^402563161 is an apocalyptic number.

It is an amenable number.

402563161 is a deficient number, since it is larger than the sum of its proper divisors (139837607).

402563161 is a wasteful number, since it uses less digits than its factorization.

402563161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 402563161 is about 20063.9766995479. The cubic root of 402563161 is about 738.3767443807.

It can be divided in two parts, 40 and 2563161, that added together give a square (2563201 = 1601²).

The spelling of 402563161 in words is "four hundred two million, five hundred sixty-three thousand, one hundred sixty-one".