2545622173 has 2 divisors, whose sum is σ = 2545622174. Its totient is φ = 2545622172.

The previous prime is 2545622159. The next prime is 2545622179. The reversal of 2545622173 is 3712265452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2545505209 + 116964 = 50453^2 + 342^2 .

It is a cyclic number.

It is not a de Polignac number, because 2545622173 - 2¹⁷ = 2545491101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2545622179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1272811086 + 1272811087.

It is an arithmetic number, because the mean of its divisors is an integer number (1272811087).

Almost surely, 2^2545622173 is an apocalyptic number.

It is an amenable number.

2545622173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2545622173 is an equidigital number, since it uses as much as digits as its factorization.

2545622173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 37.

The square root of 2545622173 is about 50454.1591248928. The cubic root of 2545622173 is about 1365.4149334073.

The spelling of 2545622173 in words is "two billion, five hundred forty-five million, six hundred twenty-two thousand, one hundred seventy-three".