213524161 has 2 divisors, whose sum is σ = 213524162. Its totient is φ = 213524160.

The previous prime is 213524153. The next prime is 213524167. The reversal of 213524161 is 161425312.

It is a happy number.

213524161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178489600 + 35034561 = 13360^2 + 5919^2 .

It is a cyclic number.

It is not a de Polignac number, because 213524161 - 2³ = 213524153 is a prime.

It is not a weakly prime, because it can be changed into another prime (213524167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106762080 + 106762081.

It is an arithmetic number, because the mean of its divisors is an integer number (106762081).

Almost surely, 2^213524161 is an apocalyptic number.

It is an amenable number.

213524161 is a deficient number, since it is larger than the sum of its proper divisors (1).

213524161 is an equidigital number, since it uses as much as digits as its factorization.

213524161 is an evil number, because the sum of its binary digits is even.

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

The square root of 213524161 is about 14612.4659452127. The cubic root of 213524161 is about 597.6987414475.

Adding to 213524161 its reverse (161425312), we get a palindrome (374949473).

The spelling of 213524161 in words is "two hundred thirteen million, five hundred twenty-four thousand, one hundred sixty-one".