10566551 has 4 divisors (see below), whose sum is σ = 10606992. Its totient is φ = 10526112.

The previous prime is 10566541. The next prime is 10566553. The reversal of 10566551 is 15566501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10566551 is a prime.

It is a super-2 number, since 2×10566551² = 223304000071202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10566553) 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 3 ways as a sum of consecutive naturals, for example, 19826 + ... + 20351.

It is an arithmetic number, because the mean of its divisors is an integer number (2651748).

Almost surely, 2^10566551 is an apocalyptic number.

10566551 is a deficient number, since it is larger than the sum of its proper divisors (40441).

10566551 is an equidigital number, since it uses as much as digits as its factorization.

10566551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40440.

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

The square root of 10566551 is about 3250.6231710243. The cubic root of 10566551 is about 219.4376201027.

The spelling of 10566551 in words is "ten million, five hundred sixty-six thousand, five hundred fifty-one".