10155561 has 8 divisors (see below), whose sum is σ = 14582400. Its totient is φ = 6249552.

The previous prime is 10155559. The next prime is 10155583. The reversal of 10155561 is 16555101.

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

It is not a de Polignac number, because 10155561 - 2¹ = 10155559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10155161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130161 + ... + 130238.

It is an arithmetic number, because the mean of its divisors is an integer number (1822800).

Almost surely, 2^10155561 is an apocalyptic number.

It is an amenable number.

10155561 is a deficient number, since it is larger than the sum of its proper divisors (4426839).

10155561 is a wasteful number, since it uses less digits than its factorization.

10155561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260415.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 10155561 is about 3186.7790949484. The cubic root of 10155561 is about 216.5548790861.

The spelling of 10155561 in words is "ten million, one hundred fifty-five thousand, five hundred sixty-one".