2102566559 has 4 divisors (see below), whose sum is σ = 2102962680. Its totient is φ = 2102170440.

The previous prime is 2102566553. The next prime is 2102566567. The reversal of 2102566559 is 9556652012.

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

It is a cyclic number.

It is not a de Polignac number, because 2102566559 - 2²⁰ = 2101517983 is a prime.

It is a super-2 number, since 2×2102566559² = 8841572270050200962, 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 (2102566553) 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, 189989 + ... + 200750.

It is an arithmetic number, because the mean of its divisors is an integer number (525740670).

Almost surely, 2^2102566559 is an apocalyptic number.

2102566559 is a deficient number, since it is larger than the sum of its proper divisors (396121).

2102566559 is an equidigital number, since it uses as much as digits as its factorization.

2102566559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396120.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 2102566559 is about 45853.7518530382. The cubic root of 2102566559 is about 1281.1006481505.

The spelling of 2102566559 in words is "two billion, one hundred two million, five hundred sixty-six thousand, five hundred fifty-nine".