252160261 has 4 divisors (see below), whose sum is σ = 252712492. Its totient is φ = 251608032.

The previous prime is 252160253. The next prime is 252160357. The reversal of 252160261 is 162061252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115971361 + 136188900 = 10769^2 + 11670^2 .

It is a cyclic number.

It is not a de Polignac number, because 252160261 - 2³ = 252160253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252160241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275430 + ... + 276343.

It is an arithmetic number, because the mean of its divisors is an integer number (63178123).

Almost surely, 2^252160261 is an apocalyptic number.

It is an amenable number.

252160261 is a deficient number, since it is larger than the sum of its proper divisors (552231).

252160261 is an equidigital number, since it uses as much as digits as its factorization.

252160261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552230.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 252160261 is about 15879.5548111400. The cubic root of 252160261 is about 631.7698290243.

Subtracting from 252160261 its reverse (162061252), we obtain a palindrome (90099009).

The spelling of 252160261 in words is "two hundred fifty-two million, one hundred sixty thousand, two hundred sixty-one".