232251661 has 2 divisors, whose sum is σ = 232251662. Its totient is φ = 232251660.

The previous prime is 232251653. The next prime is 232251673. The reversal of 232251661 is 166152232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173054025 + 59197636 = 13155^2 + 7694^2 .

It is a cyclic number.

It is not a de Polignac number, because 232251661 - 2³ = 232251653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232251361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116125830 + 116125831.

It is an arithmetic number, because the mean of its divisors is an integer number (116125831).

Almost surely, 2^232251661 is an apocalyptic number.

It is an amenable number.

232251661 is a deficient number, since it is larger than the sum of its proper divisors (1).

232251661 is an equidigital number, since it uses as much as digits as its factorization.

232251661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 28.

The square root of 232251661 is about 15239.8051496730. The cubic root of 232251661 is about 614.6854636786.

The spelling of 232251661 in words is "two hundred thirty-two million, two hundred fifty-one thousand, six hundred sixty-one".