491053 has 4 divisors (see below), whose sum is σ = 493948. Its totient is φ = 488160.

The previous prime is 491041. The next prime is 491059. The reversal of 491053 is 350194.

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

It can be written as a sum of positive squares in 2 ways, for example, as 243049 + 248004 = 493^2 + 498^2 .

It is a cyclic number.

It is not a de Polignac number, because 491053 - 2⁹ = 490541 is a prime.

It is a super-2 number, since 2×491053² = 482266097618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176 + ... + 1537.

It is an arithmetic number, because the mean of its divisors is an integer number (123487).

2⁴⁹¹⁰⁵³ is an apocalyptic number.

It is an amenable number.

491053 is a deficient number, since it is larger than the sum of its proper divisors (2895).

491053 is a wasteful number, since it uses less digits than its factorization.

491053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 491053 is about 700.7517392058. The cubic root of 491053 is about 78.8937845125.

The spelling of 491053 in words is "four hundred ninety-one thousand, fifty-three".