85253779 has 16 divisors (see below), whose sum is σ = 96974080. Its totient is φ = 74299680.

The previous prime is 85253771. The next prime is 85253837. The reversal of 85253779 is 97735258.

It is not a de Polignac number, because 85253779 - 2³ = 85253771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85253771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134794 + ... + 135424.

It is an arithmetic number, because the mean of its divisors is an integer number (6060880).

Almost surely, 2^85253779 is an apocalyptic number.

85253779 is a deficient number, since it is larger than the sum of its proper divisors (11720301).

85253779 is a wasteful number, since it uses less digits than its factorization.

85253779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210.

The product of its digits is 529200, while the sum is 46.

The square root of 85253779 is about 9233.2972983653. The cubic root of 85253779 is about 440.1201101160.

The spelling of 85253779 in words is "eighty-five million, two hundred fifty-three thousand, seven hundred seventy-nine".