491547 has 16 divisors (see below), whose sum is σ = 760320. Its totient is φ = 276672.

The previous prime is 491539. The next prime is 491581. The reversal of 491547 is 745194.

It is a happy number.

It is not a de Polignac number, because 491547 - 2³ = 491539 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491547.

It is not an unprimeable number, because it can be changed into a prime (491527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1738 + ... + 2000.

It is an arithmetic number, because the mean of its divisors is an integer number (47520).

2⁴⁹¹⁵⁴⁷ is an apocalyptic number.

491547 is a deficient number, since it is larger than the sum of its proper divisors (268773).

491547 is a wasteful number, since it uses less digits than its factorization.

491547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362.

The product of its digits is 5040, while the sum is 30.

The square root of 491547 is about 701.1041292133. The cubic root of 491547 is about 78.9202313983.

It can be divided in two parts, 49 and 1547, that added together give a triangular number (1596 = T₅₆).

The spelling of 491547 in words is "four hundred ninety-one thousand, five hundred forty-seven".