85731153 has 8 divisors (see below), whose sum is σ = 121032288. Its totient is φ = 53792064.

The previous prime is 85731137. The next prime is 85731181. The reversal of 85731153 is 35113758.

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

It is not a de Polignac number, because 85731153 - 2⁴ = 85731137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85731053) 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, 840451 + ... + 840552.

It is an arithmetic number, because the mean of its divisors is an integer number (15129036).

Almost surely, 2^85731153 is an apocalyptic number.

It is an amenable number.

85731153 is a deficient number, since it is larger than the sum of its proper divisors (35301135).

85731153 is a wasteful number, since it uses less digits than its factorization.

85731153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681023.

The product of its digits is 12600, while the sum is 33.

The square root of 85731153 is about 9259.1118904569. Note that the first 3 decimals coincide. The cubic root of 85731153 is about 440.9400579776.

The spelling of 85731153 in words is "eighty-five million, seven hundred thirty-one thousand, one hundred fifty-three".