106055561 has 4 divisors (see below), whose sum is σ = 108642324. Its totient is φ = 103468800.

The previous prime is 106055527. The next prime is 106055567. The reversal of 106055561 is 165550601.

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 39942400 + 66113161 = 6320^2 + 8131^2 .

It is a cyclic number.

It is not a de Polignac number, because 106055561 - 2²⁶ = 38946697 is a prime.

It is a super-2 number, since 2×106055561² = 22495564038049442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106055567) 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, 1293320 + ... + 1293401.

It is an arithmetic number, because the mean of its divisors is an integer number (27160581).

Almost surely, 2^106055561 is an apocalyptic number.

It is an amenable number.

106055561 is a deficient number, since it is larger than the sum of its proper divisors (2586763).

106055561 is an equidigital number, since it uses as much as digits as its factorization.

106055561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586762.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 106055561 is about 10298.3280681866. The cubic root of 106055561 is about 473.3450231304.

The spelling of 106055561 in words is "one hundred six million, fifty-five thousand, five hundred sixty-one".