2172563 has 2 divisors, whose sum is σ = 2172564. Its totient is φ = 2172562.

The previous prime is 2172559. The next prime is 2172571. The reversal of 2172563 is 3652712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2172563 - 2² = 2172559 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2132563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086281 + 1086282.

It is an arithmetic number, because the mean of its divisors is an integer number (1086282).

2^2172563 is an apocalyptic number.

2172563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172563 is an equidigital number, since it uses as much as digits as its factorization.

2172563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 2172563 is about 1473.9616684297. The cubic root of 2172563 is about 129.5162097149.

The spelling of 2172563 in words is "two million, one hundred seventy-two thousand, five hundred sixty-three".