2172055013 has 2 divisors, whose sum is σ = 2172055014. Its totient is φ = 2172055012.

The previous prime is 2172055009. The next prime is 2172055051. The reversal of 2172055013 is 3105502712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2145357124 + 26697889 = 46318^2 + 5167^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172055013 - 2² = 2172055009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172045013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086027506 + 1086027507.

It is an arithmetic number, because the mean of its divisors is an integer number (1086027507).

Almost surely, 2^2172055013 is an apocalyptic number.

It is an amenable number.

2172055013 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172055013 is an equidigital number, since it uses as much as digits as its factorization.

2172055013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2172055013 is about 46605.3109956365. The cubic root of 2172055013 is about 1295.0611446808.

Adding to 2172055013 its reverse (3105502712), we get a palindrome (5277557725).

The spelling of 2172055013 in words is "two billion, one hundred seventy-two million, fifty-five thousand, thirteen".