151281 has 16 divisors (see below), whose sum is σ = 241920. Its totient is φ = 92880.

The previous prime is 151279. The next prime is 151289. The reversal of 151281 is 182151.

151281 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 151281 - 2¹ = 151279 is a prime.

It is a super-2 number, since 2×151281² = 45771881922, which contains 22 as substring.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 151281.

It is not an unprimeable number, because it can be changed into a prime (151289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136 + ... + 566.

It is an arithmetic number, because the mean of its divisors is an integer number (15120).

2¹⁵¹²⁸¹ is an apocalyptic number.

It is an amenable number.

151281 is a deficient number, since it is larger than the sum of its proper divisors (90639).

151281 is a wasteful number, since it uses less digits than its factorization.

151281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 447 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 151281 is about 388.9485827201. The cubic root of 151281 is about 53.2837516634.

It can be divided in two parts, 15128 and 1, that added together give a square (15129 = 123²).

The spelling of 151281 in words is "one hundred fifty-one thousand, two hundred eighty-one".