85783277 has 2 divisors, whose sum is σ = 85783278. Its totient is φ = 85783276.

The previous prime is 85783213. The next prime is 85783283. The reversal of 85783277 is 77238758.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84897796 + 885481 = 9214^2 + 941^2 .

It is a cyclic number.

It is not a de Polignac number, because 85783277 - 2⁶ = 85783213 is a prime.

It is a super-2 number, since 2×85783277² = 14717541225717458, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85783777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42891638 + 42891639.

It is an arithmetic number, because the mean of its divisors is an integer number (42891639).

Almost surely, 2^85783277 is an apocalyptic number.

It is an amenable number.

85783277 is a deficient number, since it is larger than the sum of its proper divisors (1).

85783277 is an equidigital number, since it uses as much as digits as its factorization.

85783277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 658560, while the sum is 47.

The square root of 85783277 is about 9261.9262035497. The cubic root of 85783277 is about 441.0294027972.

The spelling of 85783277 in words is "eighty-five million, seven hundred eighty-three thousand, two hundred seventy-seven".