171420583 has 2 divisors, whose sum is σ = 171420584. Its totient is φ = 171420582.

The previous prime is 171420569. The next prime is 171420589. The reversal of 171420583 is 385024171.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171420583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171420589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85710291 + 85710292.

It is an arithmetic number, because the mean of its divisors is an integer number (85710292).

Almost surely, 2^171420583 is an apocalyptic number.

171420583 is a deficient number, since it is larger than the sum of its proper divisors (1).

171420583 is an equidigital number, since it uses as much as digits as its factorization.

171420583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 171420583 is about 13092.7683474504. The cubic root of 171420583 is about 555.5045953360.

The spelling of 171420583 in words is "one hundred seventy-one million, four hundred twenty thousand, five hundred eighty-three".