105640481 has 4 divisors (see below), whose sum is σ = 105661632. Its totient is φ = 105619332.

The previous prime is 105640453. The next prime is 105640487. The reversal of 105640481 is 184046501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105640481 is a prime.

It is a super-2 number, since 2×105640481² = 22319822451822722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105640487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556 + ... + 14618.

It is an arithmetic number, because the mean of its divisors is an integer number (26415408).

Almost surely, 2^105640481 is an apocalyptic number.

It is an amenable number.

105640481 is a deficient number, since it is larger than the sum of its proper divisors (21151).

105640481 is an equidigital number, since it uses as much as digits as its factorization.

105640481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21150.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 105640481 is about 10278.1555251903. The cubic root of 105640481 is about 472.7266902124.

Adding to 105640481 its reverse (184046501), we get a palindrome (289686982).

The spelling of 105640481 in words is "one hundred five million, six hundred forty thousand, four hundred eighty-one".