85251513 has 8 divisors (see below), whose sum is σ = 114264576. Its totient is φ = 56536400.

The previous prime is 85251511. The next prime is 85251521. The reversal of 85251513 is 31515258.

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 85251513 - 2¹ = 85251511 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85251511) 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, 73818 + ... + 74963.

It is an arithmetic number, because the mean of its divisors is an integer number (14283072).

Almost surely, 2^85251513 is an apocalyptic number.

It is an amenable number.

85251513 is a deficient number, since it is larger than the sum of its proper divisors (29013063).

85251513 is a wasteful number, since it uses less digits than its factorization.

85251513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148975.

The product of its digits is 6000, while the sum is 30.

The square root of 85251513 is about 9233.1745894898. The cubic root of 85251513 is about 440.1162106955.

The spelling of 85251513 in words is "eighty-five million, two hundred fifty-one thousand, five hundred thirteen".