525342161 has 2 divisors, whose sum is σ = 525342162. Its totient is φ = 525342160.

The previous prime is 525342131. The next prime is 525342173. The reversal of 525342161 is 161243525.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402243136 + 123099025 = 20056^2 + 11095^2 .

It is a cyclic number.

It is not a de Polignac number, because 525342161 - 2²⁶ = 458233297 is a prime.

It is a super-2 number, since 2×525342161² = 551968772248299842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (525342101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262671080 + 262671081.

It is an arithmetic number, because the mean of its divisors is an integer number (262671081).

Almost surely, 2^525342161 is an apocalyptic number.

It is an amenable number.

525342161 is a deficient number, since it is larger than the sum of its proper divisors (1).

525342161 is an equidigital number, since it uses as much as digits as its factorization.

525342161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 29.

The square root of 525342161 is about 22920.3438237737. The cubic root of 525342161 is about 806.8895396700.

Adding to 525342161 its reverse (161243525), we get a palindrome (686585686).

The spelling of 525342161 in words is "five hundred twenty-five million, three hundred forty-two thousand, one hundred sixty-one".