541491 has 4 divisors (see below), whose sum is σ = 721992. Its totient is φ = 360992.

The previous prime is 541483. The next prime is 541507. The reversal of 541491 is 194145.

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 541491 - 2³ = 541483 is a prime.

It is a D-number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (541391) 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, 90246 + ... + 90251.

It is an arithmetic number, because the mean of its divisors is an integer number (180498).

2⁵⁴¹⁴⁹¹ is an apocalyptic number.

541491 is a deficient number, since it is larger than the sum of its proper divisors (180501).

541491 is a wasteful number, since it uses less digits than its factorization.

541491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180500.

The product of its digits is 720, while the sum is 24.

The square root of 541491 is about 735.8607205171. The cubic root of 541491 is about 81.5074077099.

The spelling of 541491 in words is "five hundred forty-one thousand, four hundred ninety-one".