105746521 has 4 divisors (see below), whose sum is σ = 105782500. Its totient is φ = 105710544.

The previous prime is 105746519. The next prime is 105746527. The reversal of 105746521 is 125647501.

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 29376400 + 76370121 = 5420^2 + 8739^2 .

It is a cyclic number.

It is not a de Polignac number, because 105746521 - 2¹ = 105746519 is a prime.

It is a super-2 number, since 2×105746521² = 22364653407206882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105746527) 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, 13146 + ... + 19603.

It is an arithmetic number, because the mean of its divisors is an integer number (26445625).

Almost surely, 2^105746521 is an apocalyptic number.

It is an amenable number.

105746521 is a deficient number, since it is larger than the sum of its proper divisors (35979).

105746521 is an equidigital number, since it uses as much as digits as its factorization.

105746521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35978.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 105746521 is about 10283.3127444418. The cubic root of 105746521 is about 472.8848088130.

The spelling of 105746521 in words is "one hundred five million, seven hundred forty-six thousand, five hundred twenty-one".