85199555 has 16 divisors (see below), whose sum is σ = 119564544. Its totient is φ = 57062880.

The previous prime is 85199551. The next prime is 85199557. The reversal of 85199555 is 55599158.

It is not a de Polignac number, because 85199555 - 2² = 85199551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85199551) 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, 26801 + ... + 29810.

It is an arithmetic number, because the mean of its divisors is an integer number (7472784).

Almost surely, 2^85199555 is an apocalyptic number.

85199555 is a deficient number, since it is larger than the sum of its proper divisors (34364989).

85199555 is a wasteful number, since it uses less digits than its factorization.

85199555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56666.

The product of its digits is 405000, while the sum is 47.

The square root of 85199555 is about 9230.3605021689. The cubic root of 85199555 is about 440.0267803948.

The spelling of 85199555 in words is "eighty-five million, one hundred ninety-nine thousand, five hundred fifty-five".