151229 has 4 divisors (see below), whose sum is σ = 162876. Its totient is φ = 139584.

The previous prime is 151213. The next prime is 151237. The reversal of 151229 is 922151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 922151 = 37 ⋅24923.

It can be written as a sum of positive squares in 2 ways, for example, as 60025 + 91204 = 245^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 151229 - 2⁴ = 151213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 151229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5804 + ... + 5829.

It is an arithmetic number, because the mean of its divisors is an integer number (40719).

2¹⁵¹²²⁹ is an apocalyptic number.

It is an amenable number.

151229 is a deficient number, since it is larger than the sum of its proper divisors (11647).

151229 is a wasteful number, since it uses less digits than its factorization.

151229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11646.

The product of its digits is 180, while the sum is 20.

The square root of 151229 is about 388.8817300928. The cubic root of 151229 is about 53.2776458678.

The spelling of 151229 in words is "one hundred fifty-one thousand, two hundred twenty-nine".