It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 195251 = 7 ⋅27893.
It is a cyclic number.
It is a Duffinian number.
It is a congruent number.
2152591 is an apocalyptic number.
152591 is an equidigital number, since it uses as much as digits as its factorization.
152591 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 792.
The square root of 152591 is about 390.6289799797. The cubic root of 152591 is about 53.4371113021.
The spelling of 152591 in words is "one hundred fifty-two thousand, five hundred ninety-one".