148591 has 4 divisors (see below), whose sum is σ = 149800. Its totient is φ = 147384.

The previous prime is 148579. The next prime is 148609. The reversal of 148591 is 195841.

It is a happy number.

148591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 148591 - 2⁹ = 148079 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148501) 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, 396 + ... + 673.

It is an arithmetic number, because the mean of its divisors is an integer number (37450).

2¹⁴⁸⁵⁹¹ is an apocalyptic number.

148591 is a deficient number, since it is larger than the sum of its proper divisors (1209).

148591 is a wasteful number, since it uses less digits than its factorization.

148591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208.

The product of its digits is 1440, while the sum is 28.

The square root of 148591 is about 385.4750316168. The cubic root of 148591 is about 52.9660397133.

The spelling of 148591 in words is "one hundred forty-eight thousand, five hundred ninety-one".