85490555 has 4 divisors (see below), whose sum is σ = 102588672. Its totient is φ = 68392440.

The previous prime is 85490507. The next prime is 85490567. The reversal of 85490555 is 55509458.

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

It is not a de Polignac number, because 85490555 - 2⁸ = 85490299 is a prime.

It is a Duffinian 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, 8549051 + ... + 8549060.

It is an arithmetic number, because the mean of its divisors is an integer number (25647168).

Almost surely, 2^85490555 is an apocalyptic number.

85490555 is a deficient number, since it is larger than the sum of its proper divisors (17098117).

85490555 is a wasteful number, since it uses less digits than its factorization.

85490555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17098116.

The product of its (nonzero) digits is 180000, while the sum is 41.

The square root of 85490555 is about 9246.1102632404. The cubic root of 85490555 is about 440.5271831892.

The spelling of 85490555 in words is "eighty-five million, four hundred ninety thousand, five hundred fifty-five".