261098159 has 8 divisors (see below), whose sum is σ = 306463008. Its totient is φ = 217749600.

The previous prime is 261098153. The next prime is 261098183. The reversal of 261098159 is 951890162.

It is a happy number.

261098159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261098159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261098153) 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, 503792 + ... + 504309.

It is an arithmetic number, because the mean of its divisors is an integer number (38307876).

Almost surely, 2^261098159 is an apocalyptic number.

261098159 is a deficient number, since it is larger than the sum of its proper divisors (45364849).

261098159 is a wasteful number, since it uses less digits than its factorization.

261098159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008145.

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 261098159 is about 16158.5320806068. The cubic root of 261098159 is about 639.1477580498.

The spelling of 261098159 in words is "two hundred sixty-one million, ninety-eight thousand, one hundred fifty-nine".