106155561 has 8 divisors (see below), whose sum is σ = 141804544. Its totient is φ = 70638480.

The previous prime is 106155547. The next prime is 106155583. The reversal of 106155561 is 165551601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 106155561 - 2⁵ = 106155529 is a prime.

It is a super-2 number, since 2×106155561² = 22538006262449442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106155521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31081 + ... + 34326.

It is an arithmetic number, because the mean of its divisors is an integer number (17725568).

Almost surely, 2^106155561 is an apocalyptic number.

It is an amenable number.

106155561 is a deficient number, since it is larger than the sum of its proper divisors (35648983).

106155561 is an equidigital number, since it uses as much as digits as its factorization.

106155561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65951.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 106155561 is about 10303.1820812796. The cubic root of 106155561 is about 473.4937490510.

The spelling of 106155561 in words is "one hundred six million, one hundred fifty-five thousand, five hundred sixty-one".