85515790 has 8 divisors (see below), whose sum is σ = 153928440. Its totient is φ = 34206312.

The previous prime is 85515779. The next prime is 85515821. The reversal of 85515790 is 9751558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4275780 + ... + 4275799.

It is an arithmetic number, because the mean of its divisors is an integer number (19241055).

Almost surely, 2^85515790 is an apocalyptic number.

85515790 is a deficient number, since it is larger than the sum of its proper divisors (68412650).

85515790 is a wasteful number, since it uses less digits than its factorization.

85515790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8551586.

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

The square root of 85515790 is about 9247.4747904496. The cubic root of 85515790 is about 440.5705236878.

It can be divided in two parts, 8551 and 5790, that added together give a palindrome (14341).

The spelling of 85515790 in words is "eighty-five million, five hundred fifteen thousand, seven hundred ninety".