2261085487 has 2 divisors, whose sum is σ = 2261085488. Its totient is φ = 2261085486.

The previous prime is 2261085479. The next prime is 2261085529. The reversal of 2261085487 is 7845801622.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2261085487 - 2³ = 2261085479 is a prime.

It is a super-2 number, since 2×2261085487² = 10225015159044054338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261085457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130542743 + 1130542744.

It is an arithmetic number, because the mean of its divisors is an integer number (1130542744).

Almost surely, 2^2261085487 is an apocalyptic number.

2261085487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261085487 is an equidigital number, since it uses as much as digits as its factorization.

2261085487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 2261085487 is about 47550.8726208048. The cubic root of 2261085487 is about 1312.5191869243.

The spelling of 2261085487 in words is "two billion, two hundred sixty-one million, eighty-five thousand, four hundred eighty-seven".