85277405 has 4 divisors (see below), whose sum is σ = 102332892. Its totient is φ = 68221920.

The previous prime is 85277369. The next prime is 85277443. The reversal of 85277405 is 50477258.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27426169 + 57851236 = 5237^2 + 7606^2 .

It is a de Polignac number, because none of the positive numbers 2^k-85277405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8527736 + ... + 8527745.

It is an arithmetic number, because the mean of its divisors is an integer number (25583223).

Almost surely, 2^85277405 is an apocalyptic number.

It is an amenable number.

85277405 is a deficient number, since it is larger than the sum of its proper divisors (17055487).

85277405 is a wasteful number, since it uses less digits than its factorization.

85277405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17055486.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 85277405 is about 9234.5766010143. The cubic root of 85277405 is about 440.1607625361.

The spelling of 85277405 in words is "eighty-five million, two hundred seventy-seven thousand, four hundred five".