105512987 has 2 divisors, whose sum is σ = 105512988. Its totient is φ = 105512986.

The previous prime is 105512977. The next prime is 105512993. The reversal of 105512987 is 789215501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105512987 - 2⁶ = 105512923 is a prime.

It is a super-2 number, since 2×105512987² = 22265980851324338, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 105512987.

It is not a weakly prime, because it can be changed into another prime (105512917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52756493 + 52756494.

It is an arithmetic number, because the mean of its divisors is an integer number (52756494).

Almost surely, 2^105512987 is an apocalyptic number.

105512987 is a deficient number, since it is larger than the sum of its proper divisors (1).

105512987 is an equidigital number, since it uses as much as digits as its factorization.

105512987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 38.

The square root of 105512987 is about 10271.9514699009. The cubic root of 105512987 is about 472.5364409247.

The spelling of 105512987 in words is "one hundred five million, five hundred twelve thousand, nine hundred eighty-seven".