85857145 has 8 divisors (see below), whose sum is σ = 112394880. Its totient is φ = 62441520.

The previous prime is 85857133. The next prime is 85857151. The reversal of 85857145 is 54175858.

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

It is not a de Polignac number, because 85857145 - 2⁵ = 85857113 is a prime.

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, 780465 + ... + 780574.

It is an arithmetic number, because the mean of its divisors is an integer number (14049360).

Almost surely, 2^85857145 is an apocalyptic number.

It is an amenable number.

85857145 is a deficient number, since it is larger than the sum of its proper divisors (26537735).

85857145 is a wasteful number, since it uses less digits than its factorization.

85857145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561055.

The product of its digits is 224000, while the sum is 43.

The square root of 85857145 is about 9265.9130688778. The cubic root of 85857145 is about 441.1559566531.

The spelling of 85857145 in words is "eighty-five million, eight hundred fifty-seven thousand, one hundred forty-five".