85131137 has 8 divisors (see below), whose sum is σ = 104776896. Its totient is φ = 67356432.

The previous prime is 85131133. The next prime is 85131139. The reversal of 85131137 is 73113158.

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

It is not a de Polignac number, because 85131137 - 2² = 85131133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85131133) 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, 467663 + ... + 467844.

It is an arithmetic number, because the mean of its divisors is an integer number (13097112).

Almost surely, 2^85131137 is an apocalyptic number.

It is an amenable number.

85131137 is a deficient number, since it is larger than the sum of its proper divisors (19645759).

85131137 is a wasteful number, since it uses less digits than its factorization.

85131137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935527.

The product of its digits is 2520, while the sum is 29.

The square root of 85131137 is about 9226.6536187287. The cubic root of 85131137 is about 439.9089636038.

The spelling of 85131137 in words is "eighty-five million, one hundred thirty-one thousand, one hundred thirty-seven".