105520399 has 2 divisors, whose sum is σ = 105520400. Its totient is φ = 105520398.

The previous prime is 105520391. The next prime is 105520421. The reversal of 105520399 is 993025501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105520399 - 2³ = 105520391 is a prime.

It is a super-2 number, since 2×105520399² = 22269109210238402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105520391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52760199 + 52760200.

It is an arithmetic number, because the mean of its divisors is an integer number (52760200).

Almost surely, 2^105520399 is an apocalyptic number.

105520399 is a deficient number, since it is larger than the sum of its proper divisors (1).

105520399 is an equidigital number, since it uses as much as digits as its factorization.

105520399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 105520399 is about 10272.3122518740. The cubic root of 105520399 is about 472.5475054650.

The spelling of 105520399 in words is "one hundred five million, five hundred twenty thousand, three hundred ninety-nine".