154791 has 36 divisors (see below), whose sum is σ = 290472. Its totient is φ = 81648.

The previous prime is 154789. The next prime is 154799. The reversal of 154791 is 197451.

It is not a de Polignac number, because 154791 - 2¹ = 154789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (1260) is a multiple of the sum of its prime factors (42).

154791 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154799) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11901 + ... + 11913.

154791 is a Friedman number, since it can be written as 91*7*(4-1)^5, using all its digits and the basic arithmetic operations.

2¹⁵⁴⁷⁹¹ is an apocalyptic number.

154791 is a deficient number, since it is larger than the sum of its proper divisors (135681).

154791 is an equidigital number, since it uses as much as digits as its factorization.

154791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42 (or 23 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 154791 is about 393.4348738991. The cubic root of 154791 is about 53.6926989856.

The spelling of 154791 in words is "one hundred fifty-four thousand, seven hundred ninety-one".