152309 has 4 divisors (see below), whose sum is σ = 153216. Its totient is φ = 151404.

The previous prime is 152297. The next prime is 152311. The reversal of 152309 is 903251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 152309 - 2⁴ = 152293 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 152309.

It is not an unprimeable number, because it can be changed into a prime (152389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119 + ... + 564.

It is an arithmetic number, because the mean of its divisors is an integer number (38304).

2¹⁵²³⁰⁹ is an apocalyptic number.

It is an amenable number.

152309 is a deficient number, since it is larger than the sum of its proper divisors (907).

152309 is an equidigital number, since it uses as much as digits as its factorization.

152309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 152309 is about 390.2678567343. The cubic root of 152309 is about 53.4041723608.

The spelling of 152309 in words is "one hundred fifty-two thousand, three hundred nine".