105401605 has 4 divisors (see below), whose sum is σ = 126481932. Its totient is φ = 84321280.

The previous prime is 105401603. The next prime is 105401627. The reversal of 105401605 is 506104501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53012961 + 52388644 = 7281^2 + 7238^2 .

It is not a de Polignac number, because 105401605 - 2¹ = 105401603 is a prime.

It is a super-2 number, since 2×105401605² = 22218996673152050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105401603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10540156 + ... + 10540165.

It is an arithmetic number, because the mean of its divisors is an integer number (31620483).

Almost surely, 2^105401605 is an apocalyptic number.

It is an amenable number.

105401605 is a deficient number, since it is larger than the sum of its proper divisors (21080327).

105401605 is an equidigital number, since it uses as much as digits as its factorization.

105401605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21080326.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 105401605 is about 10266.5283811033. The cubic root of 105401605 is about 472.3701088421.

The spelling of 105401605 in words is "one hundred five million, four hundred one thousand, six hundred five".