2155610423 has 2 divisors, whose sum is σ = 2155610424. Its totient is φ = 2155610422.

The previous prime is 2155610351. The next prime is 2155610453. The reversal of 2155610423 is 3240165512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2155610423 - 2¹⁴ = 2155594039 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 (2155610453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077805211 + 1077805212.

It is an arithmetic number, because the mean of its divisors is an integer number (1077805212).

Almost surely, 2^2155610423 is an apocalyptic number.

2155610423 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155610423 is an equidigital number, since it uses as much as digits as its factorization.

2155610423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2155610423 is about 46428.5518081277. The cubic root of 2155610423 is about 1291.7845667550.

Adding to 2155610423 its reverse (3240165512), we get a palindrome (5395775935).

The spelling of 2155610423 in words is "two billion, one hundred fifty-five million, six hundred ten thousand, four hundred twenty-three".