105806501 has 2 divisors, whose sum is σ = 105806502. Its totient is φ = 105806500.

The previous prime is 105806479. The next prime is 105806557. The reversal of 105806501 is 105608501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70392100 + 35414401 = 8390^2 + 5951^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105806501 is a prime.

It is a super-2 number, since 2×105806501² = 22390031307726002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105803501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52903250 + 52903251.

It is an arithmetic number, because the mean of its divisors is an integer number (52903251).

Almost surely, 2^105806501 is an apocalyptic number.

It is an amenable number.

105806501 is a deficient number, since it is larger than the sum of its proper divisors (1).

105806501 is an equidigital number, since it uses as much as digits as its factorization.

105806501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 105806501 is about 10286.2287063821. The cubic root of 105806501 is about 472.9741995233.

The spelling of 105806501 in words is "one hundred five million, eight hundred six thousand, five hundred one".