152146391 has 4 divisors (see below), whose sum is σ = 152195784. Its totient is φ = 152097000.

The previous prime is 152146363. The next prime is 152146417. The reversal of 152146391 is 193641251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 152146391 - 2¹⁸ = 151884247 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 (152146321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19745 + ... + 26346.

It is an arithmetic number, because the mean of its divisors is an integer number (38048946).

Almost surely, 2^152146391 is an apocalyptic number.

152146391 is a deficient number, since it is larger than the sum of its proper divisors (49393).

152146391 is an equidigital number, since it uses as much as digits as its factorization.

152146391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49392.

The product of its digits is 6480, while the sum is 32.

The square root of 152146391 is about 12334.7635161765. The cubic root of 152146391 is about 533.8516037127.

The spelling of 152146391 in words is "one hundred fifty-two million, one hundred forty-six thousand, three hundred ninety-one".