85077247 has 2 divisors, whose sum is σ = 85077248. Its totient is φ = 85077246.

The previous prime is 85077229. The next prime is 85077277. The reversal of 85077247 is 74277058.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85077247 - 2²³ = 76688639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85077277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42538623 + 42538624.

It is an arithmetic number, because the mean of its divisors is an integer number (42538624).

Almost surely, 2^85077247 is an apocalyptic number.

85077247 is a deficient number, since it is larger than the sum of its proper divisors (1).

85077247 is an equidigital number, since it uses as much as digits as its factorization.

85077247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 85077247 is about 9223.7328126957. The cubic root of 85077247 is about 439.8161197908.

The spelling of 85077247 in words is "eighty-five million, seventy-seven thousand, two hundred forty-seven".