172580563 has 2 divisors, whose sum is σ = 172580564. Its totient is φ = 172580562.

The previous prime is 172580539. The next prime is 172580581. The reversal of 172580563 is 365085271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172580563 is a prime.

It is not a weakly prime, because it can be changed into another prime (172580263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86290281 + 86290282.

It is an arithmetic number, because the mean of its divisors is an integer number (86290282).

Almost surely, 2^172580563 is an apocalyptic number.

172580563 is a deficient number, since it is larger than the sum of its proper divisors (1).

172580563 is an equidigital number, since it uses as much as digits as its factorization.

172580563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 172580563 is about 13136.9921595470. The cubic root of 172580563 is about 556.7547878631.

The spelling of 172580563 in words is "one hundred seventy-two million, five hundred eighty thousand, five hundred sixty-three".