216325061 has 8 divisors (see below), whose sum is σ = 224640024. Its totient is φ = 208154880.

The previous prime is 216325049. The next prime is 216325073. The reversal of 216325061 is 160523612.

It is an interprime number because it is at equal distance from previous prime (216325049) and next prime (216325073).

It can be written as a sum of positive squares in 4 ways, for example, as 31528225 + 184796836 = 5615^2 + 13594^2 .

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 216325061 - 2¹⁰ = 216324037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 216325061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216325261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33146 + ... + 39131.

It is an arithmetic number, because the mean of its divisors is an integer number (28080003).

Almost surely, 2^216325061 is an apocalyptic number.

It is an amenable number.

216325061 is a deficient number, since it is larger than the sum of its proper divisors (8314963).

216325061 is an equidigital number, since it uses as much as digits as its factorization.

216325061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72391.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 216325061 is about 14707.9930989921. The cubic root of 216325061 is about 600.3008315495.

Adding to 216325061 its reverse (160523612), we get a palindrome (376848673).

The spelling of 216325061 in words is "two hundred sixteen million, three hundred twenty-five thousand, sixty-one".