202581161 has 8 divisors (see below), whose sum is σ = 206354400. Its totient is φ = 198819360.

The previous prime is 202581157. The next prime is 202581191. The reversal of 202581161 is 161185202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202581161 - 2² = 202581157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202581161.

It is not an unprimeable number, because it can be changed into a prime (202581101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38285 + ... + 43253.

It is an arithmetic number, because the mean of its divisors is an integer number (25794300).

Almost surely, 2^202581161 is an apocalyptic number.

It is an amenable number.

202581161 is a deficient number, since it is larger than the sum of its proper divisors (3773239).

202581161 is an equidigital number, since it uses as much as digits as its factorization.

202581161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5719.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 202581161 is about 14233.1008919350. The cubic root of 202581161 is about 587.3085886774.

The spelling of 202581161 in words is "two hundred two million, five hundred eighty-one thousand, one hundred sixty-one".