2206556023 has 4 divisors (see below), whose sum is σ = 2521778320. Its totient is φ = 1891333728.

The previous prime is 2206555993. The next prime is 2206556101. The reversal of 2206556023 is 3206556022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3206556022 = 2 ⋅1603278011.

It is a cyclic number.

It is not a de Polignac number, because 2206556023 - 2²¹ = 2204458871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206556323) 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, 157611138 + ... + 157611151.

It is an arithmetic number, because the mean of its divisors is an integer number (630444580).

Almost surely, 2^2206556023 is an apocalyptic number.

2206556023 is a deficient number, since it is larger than the sum of its proper divisors (315222297).

2206556023 is an equidigital number, since it uses as much as digits as its factorization.

2206556023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315222296.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 2206556023 is about 46973.9930493459. The cubic root of 2206556023 is about 1301.8820910243.

Subtracting 2206556023 from its reverse (3206556022), we obtain a palindrome (999999999).

The spelling of 2206556023 in words is "two billion, two hundred six million, five hundred fifty-six thousand, twenty-three".