105555973 has 2 divisors, whose sum is σ = 105555974. Its totient is φ = 105555972.

The previous prime is 105555971. The next prime is 105555977. The reversal of 105555973 is 379555501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83484769 + 22071204 = 9137^2 + 4698^2 .

It is a cyclic number.

It is not a de Polignac number, because 105555973 - 2¹ = 105555971 is a prime.

It is a super-2 number, since 2×105555973² = 22284126871953458, which contains 22 as substring.

Together with 105555971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105555971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52777986 + 52777987.

It is an arithmetic number, because the mean of its divisors is an integer number (52777987).

Almost surely, 2^105555973 is an apocalyptic number.

It is an amenable number.

105555973 is a deficient number, since it is larger than the sum of its proper divisors (1).

105555973 is an equidigital number, since it uses as much as digits as its factorization.

105555973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118125, while the sum is 40.

The square root of 105555973 is about 10274.0436537908. The cubic root of 105555973 is about 472.6006026746.

The spelling of 105555973 in words is "one hundred five million, five hundred fifty-five thousand, nine hundred seventy-three".