172590427 has 2 divisors, whose sum is σ = 172590428. Its totient is φ = 172590426.

The previous prime is 172590401. The next prime is 172590461. The reversal of 172590427 is 724095271.

It is a weak prime.

It is an emirp because it is prime and its reverse (724095271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172590427 - 2¹⁵ = 172557659 is a prime.

It is not a weakly prime, because it can be changed into another prime (172590487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86295213 + 86295214.

It is an arithmetic number, because the mean of its divisors is an integer number (86295214).

Almost surely, 2^172590427 is an apocalyptic number.

172590427 is a deficient number, since it is larger than the sum of its proper divisors (1).

172590427 is an equidigital number, since it uses as much as digits as its factorization.

172590427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 172590427 is about 13137.3675825867. The cubic root of 172590427 is about 556.7653949375.

The spelling of 172590427 in words is "one hundred seventy-two million, five hundred ninety thousand, four hundred twenty-seven".