2156430255 has 16 divisors (see below), whose sum is σ = 3943186944. Its totient is φ = 985796640.

The previous prime is 2156430253. The next prime is 2156430257. The reversal of 2156430255 is 5520346512.

It is an interprime number because it is at equal distance from previous prime (2156430253) and next prime (2156430257).

It is not a de Polignac number, because 2156430255 - 2¹ = 2156430253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156430253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10268611 + ... + 10268820.

It is an arithmetic number, because the mean of its divisors is an integer number (246449184).

Almost surely, 2^2156430255 is an apocalyptic number.

2156430255 is a deficient number, since it is larger than the sum of its proper divisors (1786756689).

2156430255 is a wasteful number, since it uses less digits than its factorization.

2156430255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20537446.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 2156430255 is about 46437.3799325500. The cubic root of 2156430255 is about 1291.9483118797.

Adding to 2156430255 its reverse (5520346512), we get a palindrome (7676776767).

The spelling of 2156430255 in words is "two billion, one hundred fifty-six million, four hundred thirty thousand, two hundred fifty-five".