491237 has 4 divisors (see below), whose sum is σ = 495936. Its totient is φ = 486540.

The previous prime is 491219. The next prime is 491251. The reversal of 491237 is 732194.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 732194 = 2 ⋅366097.

It is a cyclic number.

It is not a de Polignac number, because 491237 - 2¹⁶ = 425701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491297) 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, 2189 + ... + 2402.

It is an arithmetic number, because the mean of its divisors is an integer number (123984).

2⁴⁹¹²³⁷ is an apocalyptic number.

It is an amenable number.

491237 is a deficient number, since it is larger than the sum of its proper divisors (4699).

491237 is a wasteful number, since it uses less digits than its factorization.

491237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698.

The product of its digits is 1512, while the sum is 26.

The square root of 491237 is about 700.8830144896. The cubic root of 491237 is about 78.9036372464.

The spelling of 491237 in words is "four hundred ninety-one thousand, two hundred thirty-seven".