105561199 has 2 divisors, whose sum is σ = 105561200. Its totient is φ = 105561198.

The previous prime is 105561121. The next prime is 105561221. The reversal of 105561199 is 991165501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105561199 - 2²¹ = 103464047 is a prime.

It is a super-2 number, since 2×105561199² = 22286333468635202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105561299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52780599 + 52780600.

It is an arithmetic number, because the mean of its divisors is an integer number (52780600).

Almost surely, 2^105561199 is an apocalyptic number.

105561199 is a deficient number, since it is larger than the sum of its proper divisors (1).

105561199 is an equidigital number, since it uses as much as digits as its factorization.

105561199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 37.

The square root of 105561199 is about 10274.2979808841. The cubic root of 105561199 is about 472.6084019174.

The spelling of 105561199 in words is "one hundred five million, five hundred sixty-one thousand, one hundred ninety-nine".