105551287 has 2 divisors, whose sum is σ = 105551288. Its totient is φ = 105551286.

The previous prime is 105551233. The next prime is 105551291. The reversal of 105551287 is 782155501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105551287 - 2²³ = 97162679 is a prime.

It is a super-2 number, since 2×105551287² = 22282148374712738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105551297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52775643 + 52775644.

It is an arithmetic number, because the mean of its divisors is an integer number (52775644).

Almost surely, 2^105551287 is an apocalyptic number.

105551287 is a deficient number, since it is larger than the sum of its proper divisors (1).

105551287 is an equidigital number, since it uses as much as digits as its factorization.

105551287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14000, while the sum is 34.

The square root of 105551287 is about 10273.8156008369. The cubic root of 105551287 is about 472.5936091048.

The spelling of 105551287 in words is "one hundred five million, five hundred fifty-one thousand, two hundred eighty-seven".