10661155 has 4 divisors (see below), whose sum is σ = 12793392. Its totient is φ = 8528920.

The previous prime is 10661111. The next prime is 10661171. The reversal of 10661155 is 55116601.

10661155 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 10661155 - 2¹¹ = 10659107 is a prime.

It is a super-2 number, since 2×10661155² = 227320451868050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066111 + ... + 1066120.

It is an arithmetic number, because the mean of its divisors is an integer number (3198348).

Almost surely, 2^10661155 is an apocalyptic number.

10661155 is a deficient number, since it is larger than the sum of its proper divisors (2132237).

10661155 is an equidigital number, since it uses as much as digits as its factorization.

10661155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132236.

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

The square root of 10661155 is about 3265.1424164958. The cubic root of 10661155 is about 220.0905618891.

Adding to 10661155 its reverse (55116601), we get a palindrome (65777756).

It can be divided in two parts, 10661 and 155, that added together give a square (10816 = 104²).

The spelling of 10661155 in words is "ten million, six hundred sixty-one thousand, one hundred fifty-five".