491254 has 4 divisors (see below), whose sum is σ = 736884. Its totient is φ = 245626.

The previous prime is 491251. The next prime is 491261. The reversal of 491254 is 452194.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122812 + ... + 122815.

It is an arithmetic number, because the mean of its divisors is an integer number (184221).

2⁴⁹¹²⁵⁴ is an apocalyptic number.

491254 is a deficient number, since it is larger than the sum of its proper divisors (245630).

491254 is a wasteful number, since it uses less digits than its factorization.

491254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245629.

The product of its digits is 1440, while the sum is 25.

The square root of 491254 is about 700.8951419435. The cubic root of 491254 is about 78.9045474292.

Subtracting from 491254 its reverse (452194), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 491254 in words is "four hundred ninety-one thousand, two hundred fifty-four".