105521041 has 4 divisors (see below), whose sum is σ = 111074800. Its totient is φ = 99967284.

The previous prime is 105521029. The next prime is 105521051. The reversal of 105521041 is 140125501.

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, and also an emirpimes, since its reverse is a distinct semiprime: 140125501 = 233 ⋅601397.

It is not a de Polignac number, because 105521041 - 2¹⁷ = 105389969 is a prime.

It is a super-2 number, since 2×105521041² = 22269380187447362, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 5553739 = 105521041 / (1 + 0 + 5 + 5 + 2 + 1 + 0 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105521051) 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, 2776851 + ... + 2776888.

It is an arithmetic number, because the mean of its divisors is an integer number (27768700).

Almost surely, 2^105521041 is an apocalyptic number.

It is an amenable number.

105521041 is a deficient number, since it is larger than the sum of its proper divisors (5553759).

105521041 is an equidigital number, since it uses as much as digits as its factorization.

105521041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553758.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 105521041 is about 10272.3435008765. The cubic root of 105521041 is about 472.5484638102.

Adding to 105521041 its reverse (140125501), we get a palindrome (245646542).

The spelling of 105521041 in words is "one hundred five million, five hundred twenty-one thousand, forty-one".