235039561 has 3 divisors (see below), whose sum is σ = 235054893. Its totient is φ = 235024230.

The previous prime is 235039559. The next prime is 235039583. The reversal of 235039561 is 165930532.

It is a happy number.

The square root of 235039561 is 15331.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 235039561 - 2¹ = 235039559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235039361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7666 + ... + 22996.

It is an arithmetic number, because the mean of its divisors is an integer number (78351631).

Almost surely, 2^235039561 is an apocalyptic number.

235039561 is the 15331-st square number.

235039561 is the 7666-th centered octagonal number.

It is an amenable number.

235039561 is a deficient number, since it is larger than the sum of its proper divisors (15332).

235039561 is an frugal number, since it uses more digits than its factorization.

235039561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30662 (or 15331 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 34.

The cubic root of 235039561 is about 617.1352058680.

The spelling of 235039561 in words is "two hundred thirty-five million, thirty-nine thousand, five hundred sixty-one".