202500161 has 2 divisors, whose sum is σ = 202500162. Its totient is φ = 202500160.

The previous prime is 202500139. The next prime is 202500167. The reversal of 202500161 is 161005202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193738561 + 8761600 = 13919^2 + 2960^2 .

It is a cyclic number.

It is not a de Polignac number, because 202500161 - 2²⁶ = 135391297 is a prime.

It is not a weakly prime, because it can be changed into another prime (202500167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101250080 + 101250081.

It is an arithmetic number, because the mean of its divisors is an integer number (101250081).

Almost surely, 2^202500161 is an apocalyptic number.

It is an amenable number.

202500161 is a deficient number, since it is larger than the sum of its proper divisors (1).

202500161 is an equidigital number, since it uses as much as digits as its factorization.

202500161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 202500161 is about 14230.2551277200. The cubic root of 202500161 is about 587.2303018034.

Adding to 202500161 its reverse (161005202), we get a palindrome (363505363).

The spelling of 202500161 in words is "two hundred two million, five hundred thousand, one hundred sixty-one".