85257487 has 8 divisors (see below), whose sum is σ = 97594272. Its totient is φ = 72960000.

The previous prime is 85257479. The next prime is 85257547. The reversal of 85257487 is 78475258.

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

It is a cyclic number.

It is not a de Polignac number, because 85257487 - 2³ = 85257479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85251487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5014 + ... + 13987.

It is an arithmetic number, because the mean of its divisors is an integer number (12199284).

Almost surely, 2^85257487 is an apocalyptic number.

85257487 is a deficient number, since it is larger than the sum of its proper divisors (12336785).

85257487 is a wasteful number, since it uses less digits than its factorization.

85257487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19649.

The product of its digits is 627200, while the sum is 46.

The square root of 85257487 is about 9233.4980911895. The cubic root of 85257487 is about 440.1264908369.

The spelling of 85257487 in words is "eighty-five million, two hundred fifty-seven thousand, four hundred eighty-seven".