105550987 has 2 divisors, whose sum is σ = 105550988. Its totient is φ = 105550986.

The previous prime is 105550967. The next prime is 105550999. The reversal of 105550987 is 789055501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105550987 - 2⁷ = 105550859 is a prime.

It is a super-2 number, since 2×105550987² = 22282021713348338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105550937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52775493 + 52775494.

It is an arithmetic number, because the mean of its divisors is an integer number (52775494).

Almost surely, 2^105550987 is an apocalyptic number.

105550987 is a deficient number, since it is larger than the sum of its proper divisors (1).

105550987 is an equidigital number, since it uses as much as digits as its factorization.

105550987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 105550987 is about 10273.8010006034. The cubic root of 105550987 is about 472.5931613660.

The spelling of 105550987 in words is "one hundred five million, five hundred fifty thousand, nine hundred eighty-seven".