261114005 has 4 divisors (see below), whose sum is σ = 313336812. Its totient is φ = 208891200.

The previous prime is 261113981. The next prime is 261114031. The reversal of 261114005 is 500411162.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57138481 + 203975524 = 7559^2 + 14282^2 .

It is not a de Polignac number, because 261114005 - 2¹⁸ = 260851861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26111396 + ... + 26111405.

It is an arithmetic number, because the mean of its divisors is an integer number (78334203).

Almost surely, 2^261114005 is an apocalyptic number.

It is an amenable number.

261114005 is a deficient number, since it is larger than the sum of its proper divisors (52222807).

261114005 is an equidigital number, since it uses as much as digits as its factorization.

261114005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52222806.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 261114005 is about 16159.0224023609. The cubic root of 261114005 is about 639.1606877088.

Adding to 261114005 its reverse (500411162), we get a palindrome (761525167).

The spelling of 261114005 in words is "two hundred sixty-one million, one hundred fourteen thousand, five".