105520587287 has 2 divisors, whose sum is σ = 105520587288. Its totient is φ = 105520587286.

The previous prime is 105520587233. The next prime is 105520587349. The reversal of 105520587287 is 782785025501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105520587287 - 2¹⁰ = 105520586263 is a prime.

It is a super-2 number, since 2×105520587287² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105520587787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52760293643 + 52760293644.

It is an arithmetic number, because the mean of its divisors is an integer number (52760293644).

Almost surely, 2^105520587287 is an apocalyptic number.

105520587287 is a deficient number, since it is larger than the sum of its proper divisors (1).

105520587287 is an equidigital number, since it uses as much as digits as its factorization.

105520587287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568000, while the sum is 50.

The spelling of 105520587287 in words is "one hundred five billion, five hundred twenty million, five hundred eighty-seven thousand, two hundred eighty-seven".