172143883 has 2 divisors, whose sum is σ = 172143884. Its totient is φ = 172143882.

The previous prime is 172143877. The next prime is 172143893. The reversal of 172143883 is 388341271.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172143883 is a prime.

It is not a weakly prime, because it can be changed into another prime (172143833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86071941 + 86071942.

It is an arithmetic number, because the mean of its divisors is an integer number (86071942).

Almost surely, 2^172143883 is an apocalyptic number.

172143883 is a deficient number, since it is larger than the sum of its proper divisors (1).

172143883 is an equidigital number, since it uses as much as digits as its factorization.

172143883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 172143883 is about 13120.3613898398. The cubic root of 172143883 is about 556.2848063395.

The spelling of 172143883 in words is "one hundred seventy-two million, one hundred forty-three thousand, eight hundred eighty-three".