260915091 has 4 divisors (see below), whose sum is σ = 347886792. Its totient is φ = 173943392.

The previous prime is 260915089. The next prime is 260915101. The reversal of 260915091 is 190519062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 260915091 - 2¹ = 260915089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (260915041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43485846 + ... + 43485851.

It is an arithmetic number, because the mean of its divisors is an integer number (86971698).

Almost surely, 2^260915091 is an apocalyptic number.

260915091 is a deficient number, since it is larger than the sum of its proper divisors (86971701).

260915091 is an equidigital number, since it uses as much as digits as its factorization.

260915091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86971700.

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 260915091 is about 16152.8663400648. The cubic root of 260915091 is about 638.9983444355.

The spelling of 260915091 in words is "two hundred sixty million, nine hundred fifteen thousand, ninety-one".