289253261 has 8 divisors (see below), whose sum is σ = 316861248. Its totient is φ = 261864000.

The previous prime is 289253233. The next prime is 289253269. The reversal of 289253261 is 162352982.

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 289253261 - 2⁶ = 289253197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289253269) 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, 51905 + ... + 57206.

It is an arithmetic number, because the mean of its divisors is an integer number (39607656).

Almost surely, 2^289253261 is an apocalyptic number.

It is an amenable number.

289253261 is a deficient number, since it is larger than the sum of its proper divisors (27607987).

289253261 is a wasteful number, since it uses less digits than its factorization.

289253261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109363.

The product of its digits is 51840, while the sum is 38.

The square root of 289253261 is about 17007.4472217320. The cubic root of 289253261 is about 661.3419749065.

The spelling of 289253261 in words is "two hundred eighty-nine million, two hundred fifty-three thousand, two hundred sixty-one".