158481 has 6 divisors (see below), whose sum is σ = 228930. Its totient is φ = 105648.

The previous prime is 158449. The next prime is 158489. The reversal of 158481 is 184851.

158481 is a `hidden beast` number, since 1 + 584 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 147456 + 11025 = 384^2 + 105^2 .

It is not a de Polignac number, because 158481 - 2⁵ = 158449 is a prime.

It is a super-2 number, since 2×158481² = 50232454722, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 158481.

It is not an unprimeable number, because it can be changed into a prime (158489) 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, 8796 + ... + 8813.

It is an arithmetic number, because the mean of its divisors is an integer number (38155).

2¹⁵⁸⁴⁸¹ is an apocalyptic number.

It is an amenable number.

158481 is a deficient number, since it is larger than the sum of its proper divisors (70449).

158481 is a wasteful number, since it uses less digits than its factorization.

158481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17615 (or 17612 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 158481 is about 398.0967219157. The cubic root of 158481 is about 54.1160057557.

The spelling of 158481 in words is "one hundred fifty-eight thousand, four hundred eighty-one".