152391 has 8 divisors (see below), whose sum is σ = 206080. Its totient is φ = 100152.

The previous prime is 152389. The next prime is 152393. The reversal of 152391 is 193251.

152391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (152389) and next prime (152393).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 152391 - 2¹ = 152389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85 + ... + 558.

It is an arithmetic number, because the mean of its divisors is an integer number (25760).

2¹⁵²³⁹¹ is an apocalyptic number.

152391 is a deficient number, since it is larger than the sum of its proper divisors (53689).

152391 is an equidigital number, since it uses as much as digits as its factorization.

152391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725.

The product of its digits is 270, while the sum is 21.

The square root of 152391 is about 390.3728986495. The cubic root of 152391 is about 53.4137545402.

The spelling of 152391 in words is "one hundred fifty-two thousand, three hundred ninety-one".