85880143 has 2 divisors, whose sum is σ = 85880144. Its totient is φ = 85880142.

The previous prime is 85880129. The next prime is 85880149. The reversal of 85880143 is 34108858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85880143 - 2²¹ = 83782991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85880149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42940071 + 42940072.

It is an arithmetic number, because the mean of its divisors is an integer number (42940072).

Almost surely, 2^85880143 is an apocalyptic number.

85880143 is a deficient number, since it is larger than the sum of its proper divisors (1).

85880143 is an equidigital number, since it uses as much as digits as its factorization.

85880143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 85880143 is about 9267.1539859873. The cubic root of 85880143 is about 441.1953430041.

The spelling of 85880143 in words is "eighty-five million, eight hundred eighty thousand, one hundred forty-three".