105511649 has 4 divisors (see below), whose sum is σ = 110099136. Its totient is φ = 100924164.

The previous prime is 105511633. The next prime is 105511661. The reversal of 105511649 is 946115501.

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 not a de Polignac number, because 105511649 - 2⁴ = 105511633 is a prime.

It is a super-2 number, since 2×105511649² = 22265416149398402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105511349) 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, 2293709 + ... + 2293754.

It is an arithmetic number, because the mean of its divisors is an integer number (27524784).

Almost surely, 2^105511649 is an apocalyptic number.

It is an amenable number.

105511649 is a deficient number, since it is larger than the sum of its proper divisors (4587487).

105511649 is an equidigital number, since it uses as much as digits as its factorization.

105511649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4587486.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 105511649 is about 10271.8863408821. The cubic root of 105511649 is about 472.5344435199.

The spelling of 105511649 in words is "one hundred five million, five hundred eleven thousand, six hundred forty-nine".