2155430233 has 24 divisors (see below), whose sum is σ = 2409321600. Its totient is φ = 1926518880.

The previous prime is 2155430231. The next prime is 2155430261. The reversal of 2155430233 is 3320345512.

It is not a de Polignac number, because 2155430233 - 2¹ = 2155430231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155430231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4234383 + ... + 4234891.

It is an arithmetic number, because the mean of its divisors is an integer number (100388400).

Almost surely, 2^2155430233 is an apocalyptic number.

It is an amenable number.

2155430233 is a deficient number, since it is larger than the sum of its proper divisors (253891367).

2155430233 is a wasteful number, since it uses less digits than its factorization.

2155430233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1042 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 2155430233 is about 46426.6112590613. The cubic root of 2155430233 is about 1291.7485718237.

Adding to 2155430233 its reverse (3320345512), we get a palindrome (5475775745).

The spelling of 2155430233 in words is "two billion, one hundred fifty-five million, four hundred thirty thousand, two hundred thirty-three".