105501661 has 16 divisors (see below), whose sum is σ = 114301440. Its totient is φ = 97055280.

The previous prime is 105501637. The next prime is 105501673. The reversal of 105501661 is 166105501.

It is a cyclic number.

It is not a de Polignac number, because 105501661 - 2⁵ = 105501629 is a prime.

It is a super-2 number, since 2×105501661² = 22261200947517842, 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 (105501601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214626 + ... + 215116.

It is an arithmetic number, because the mean of its divisors is an integer number (7143840).

Almost surely, 2^105501661 is an apocalyptic number.

It is an amenable number.

105501661 is a deficient number, since it is larger than the sum of its proper divisors (8799779).

105501661 is a wasteful number, since it uses less digits than its factorization.

105501661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 105501661 is about 10271.4001479837. The cubic root of 105501661 is about 472.5195326136.

The spelling of 105501661 in words is "one hundred five million, five hundred one thousand, six hundred sixty-one".