235356561 has 12 divisors (see below), whose sum is σ = 370865040. Its totient is φ = 142640280.

The previous prime is 235356559. The next prime is 235356571. The reversal of 235356561 is 165653532.

235356561 is a `hidden beast` number, since 2 + 3 + 535 + 65 + 61 = 666.

It is not a de Polignac number, because 235356561 - 2¹ = 235356559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (235356571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1188571 + ... + 1188768.

It is an arithmetic number, because the mean of its divisors is an integer number (30905420).

Almost surely, 2^235356561 is an apocalyptic number.

It is an amenable number.

235356561 is a deficient number, since it is larger than the sum of its proper divisors (135508479).

235356561 is a wasteful number, since it uses less digits than its factorization.

235356561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377356 (or 2377353 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

The square root of 235356561 is about 15341.3350462077. The cubic root of 235356561 is about 617.4125265243.

The spelling of 235356561 in words is "two hundred thirty-five million, three hundred fifty-six thousand, five hundred sixty-one".