106166561 has 4 divisors (see below), whose sum is σ = 108425472. Its totient is φ = 103907652.

The previous prime is 106166531. The next prime is 106166591. The reversal of 106166561 is 165661601.

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 an interprime number because it is at equal distance from previous prime (106166531) and next prime (106166591).

It is a cyclic number.

It is not a de Polignac number, because 106166561 - 2⁶ = 106166497 is a prime.

It is a super-2 number, since 2×106166561² = 22542677349133442, 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 (106166521) 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, 1129385 + ... + 1129478.

It is an arithmetic number, because the mean of its divisors is an integer number (27106368).

Almost surely, 2^106166561 is an apocalyptic number.

It is an amenable number.

106166561 is a deficient number, since it is larger than the sum of its proper divisors (2258911).

106166561 is an equidigital number, since it uses as much as digits as its factorization.

106166561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2258910.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 106166561 is about 10303.7158831171. The cubic root of 106166561 is about 473.5101031992.

The spelling of 106166561 in words is "one hundred six million, one hundred sixty-six thousand, five hundred sixty-one".