2145563137 has 2 divisors, whose sum is σ = 2145563138. Its totient is φ = 2145563136.

The previous prime is 2145563083. The next prime is 2145563171. The reversal of 2145563137 is 7313655412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1511732161 + 633830976 = 38881^2 + 25176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145563137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2145563096 and 2145563105.

It is not a weakly prime, because it can be changed into another prime (2145573137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072781568 + 1072781569.

It is an arithmetic number, because the mean of its divisors is an integer number (1072781569).

Almost surely, 2^2145563137 is an apocalyptic number.

It is an amenable number.

2145563137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145563137 is an equidigital number, since it uses as much as digits as its factorization.

2145563137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 37.

The square root of 2145563137 is about 46320.2238444505. The cubic root of 2145563137 is about 1289.7744406621.

The spelling of 2145563137 in words is "two billion, one hundred forty-five million, five hundred sixty-three thousand, one hundred thirty-seven".