105935821 has 4 divisors (see below), whose sum is σ = 106087644. Its totient is φ = 105784000.

The previous prime is 105935813. The next prime is 105935831. The reversal of 105935821 is 128539501.

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 38613796 + 67322025 = 6214^2 + 8205^2 .

It is a cyclic number.

It is not a de Polignac number, because 105935821 - 2³ = 105935813 is a prime.

It is a super-2 number, since 2×105935821² = 22444796341888082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105935801) 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, 74860 + ... + 76261.

It is an arithmetic number, because the mean of its divisors is an integer number (26521911).

Almost surely, 2^105935821 is an apocalyptic number.

It is an amenable number.

105935821 is a deficient number, since it is larger than the sum of its proper divisors (151823).

105935821 is an equidigital number, since it uses as much as digits as its factorization.

105935821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151822.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 105935821 is about 10292.5128612987. The cubic root of 105935821 is about 473.1668156686.

The spelling of 105935821 in words is "one hundred five million, nine hundred thirty-five thousand, eight hundred twenty-one".