10561555 has 8 divisors (see below), whose sum is σ = 12790800. Its totient is φ = 8371296.

The previous prime is 10561543. The next prime is 10561561. The reversal of 10561555 is 55516501.

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

It is a cyclic number.

It is not a de Polignac number, because 10561555 - 2⁷ = 10561427 is a prime.

It is a super-2 number, since 2×10561555² = 223092888036050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9145 + ... + 10234.

It is an arithmetic number, because the mean of its divisors is an integer number (1598850).

Almost surely, 2^10561555 is an apocalyptic number.

10561555 is a deficient number, since it is larger than the sum of its proper divisors (2229245).

10561555 is a wasteful number, since it uses less digits than its factorization.

10561555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19493.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 10561555 is about 3249.8546121327. The cubic root of 10561555 is about 219.4030303493.

The spelling of 10561555 in words is "ten million, five hundred sixty-one thousand, five hundred fifty-five".