85435515 has 24 divisors (see below), whose sum is σ = 161551728. Its totient is φ = 41423040.

The previous prime is 85435487. The next prime is 85435517. The reversal of 85435515 is 51553458.

It is a happy number.

It is not a de Polignac number, because 85435515 - 2⁶ = 85435451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85435515.

It is not an unprimeable number, because it can be changed into a prime (85435517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85804 + ... + 86793.

It is an arithmetic number, because the mean of its divisors is an integer number (6731322).

Almost surely, 2^85435515 is an apocalyptic number.

85435515 is a deficient number, since it is larger than the sum of its proper divisors (76116213).

85435515 is a wasteful number, since it uses less digits than its factorization.

85435515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172619 (or 172616 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 85435515 is about 9243.1333972847. The cubic root of 85435515 is about 440.4326237319.

It can be divided in two parts, 85 and 435515, that added together give a square (435600 = 660²).

The spelling of 85435515 in words is "eighty-five million, four hundred thirty-five thousand, five hundred fifteen".