2220815543 has 2 divisors, whose sum is σ = 2220815544. Its totient is φ = 2220815542.

The previous prime is 2220815537. The next prime is 2220815557. The reversal of 2220815543 is 3455180222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2220815543 - 2⁸ = 2220815287 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220815503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110407771 + 1110407772.

It is an arithmetic number, because the mean of its divisors is an integer number (1110407772).

Almost surely, 2^2220815543 is an apocalyptic number.

2220815543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220815543 is an equidigital number, since it uses as much as digits as its factorization.

2220815543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 2220815543 is about 47125.5296309760. The cubic root of 2220815543 is about 1304.6804741218.

Adding to 2220815543 its reverse (3455180222), we get a palindrome (5675995765).

The spelling of 2220815543 in words is "two billion, two hundred twenty million, eight hundred fifteen thousand, five hundred forty-three".