2155334523 has 4 divisors (see below), whose sum is σ = 2873779368. Its totient is φ = 1436889680.

The previous prime is 2155334497. The next prime is 2155334539. The reversal of 2155334523 is 3254335512.

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 2155334523 - 2⁶ = 2155334459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2155334543) 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, 359222418 + ... + 359222423.

It is an arithmetic number, because the mean of its divisors is an integer number (718444842).

Almost surely, 2^2155334523 is an apocalyptic number.

2155334523 is a deficient number, since it is larger than the sum of its proper divisors (718444845).

2155334523 is an equidigital number, since it uses as much as digits as its factorization.

2155334523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718444844.

The product of its digits is 54000, while the sum is 33.

The square root of 2155334523 is about 46425.5804810236. The cubic root of 2155334523 is about 1291.7294518844.

The spelling of 2155334523 in words is "two billion, one hundred fifty-five million, three hundred thirty-four thousand, five hundred twenty-three".