85815495 has 48 divisors (see below), whose sum is σ = 162021600. Its totient is φ = 41852160.

The previous prime is 85815481. The next prime is 85815497. The reversal of 85815495 is 59451858.

It is a happy number.

85815495 is a `hidden beast` number, since 85 + 81 + 5 + 495 = 666.

It is not a de Polignac number, because 85815495 - 2⁵ = 85815463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 85815495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85815497) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23065 + ... + 26525.

It is an arithmetic number, because the mean of its divisors is an integer number (3375450).

Almost surely, 2^85815495 is an apocalyptic number.

85815495 is a deficient number, since it is larger than the sum of its proper divisors (76206105).

85815495 is a wasteful number, since it uses less digits than its factorization.

85815495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520 (or 3517 counting only the distinct ones).

The product of its digits is 288000, while the sum is 45.

The square root of 85815495 is about 9263.6653113117. The cubic root of 85815495 is about 441.0846089994.

The spelling of 85815495 in words is "eighty-five million, eight hundred fifteen thousand, four hundred ninety-five".