85551790 has 16 divisors (see below), whose sum is σ = 154270512. Its totient is φ = 34159104.

The previous prime is 85551761. The next prime is 85551821. The reversal of 85551790 is 9715558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1644 + ... + 13183.

It is an arithmetic number, because the mean of its divisors is an integer number (9641907).

Almost surely, 2^85551790 is an apocalyptic number.

85551790 is a deficient number, since it is larger than the sum of its proper divisors (68718722).

85551790 is a wasteful number, since it uses less digits than its factorization.

85551790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15411.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 85551790 is about 9249.4210629639. The cubic root of 85551790 is about 440.6323380566.

The spelling of 85551790 in words is "eighty-five million, five hundred fifty-one thousand, seven hundred ninety".