153891 has 6 divisors (see below), whose sum is σ = 222300. Its totient is φ = 102588.

The previous prime is 153889. The next prime is 153911. The reversal of 153891 is 198351.

It is not a de Polignac number, because 153891 - 2¹ = 153889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (153841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8541 + ... + 8558.

It is an arithmetic number, because the mean of its divisors is an integer number (37050).

2¹⁵³⁸⁹¹ is an apocalyptic number.

153891 is a deficient number, since it is larger than the sum of its proper divisors (68409).

153891 is a wasteful number, since it uses less digits than its factorization.

153891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17105 (or 17102 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 153891 is about 392.2894339643. The cubic root of 153891 is about 53.5884349816.

The spelling of 153891 in words is "one hundred fifty-three thousand, eight hundred ninety-one".