105581197 has 2 divisors, whose sum is σ = 105581198. Its totient is φ = 105581196.

The previous prime is 105581173. The next prime is 105581219. The reversal of 105581197 is 791185501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84107241 + 21473956 = 9171^2 + 4634^2 .

It is an emirp because it is prime and its reverse (791185501) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105581197 is a prime.

It is a super-2 number, since 2×105581197² = 22294778319905618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105581107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52790598 + 52790599.

It is an arithmetic number, because the mean of its divisors is an integer number (52790599).

Almost surely, 2^105581197 is an apocalyptic number.

It is an amenable number.

105581197 is a deficient number, since it is larger than the sum of its proper divisors (1).

105581197 is an equidigital number, since it uses as much as digits as its factorization.

105581197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 37.

The square root of 105581197 is about 10275.2711399748. The cubic root of 105581197 is about 472.6382444042.

The spelling of 105581197 in words is "one hundred five million, five hundred eighty-one thousand, one hundred ninety-seven".