537491 has 4 divisors (see below), whose sum is σ = 565800. Its totient is φ = 509184.

The previous prime is 537413. The next prime is 537497. The reversal of 537491 is 194735.

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 537491 - 2¹⁰ = 536467 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (537497) 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, 14126 + ... + 14163.

It is an arithmetic number, because the mean of its divisors is an integer number (141450).

537491 is a Friedman number, since it can be written as 14^5-37*9, using all its digits and the basic arithmetic operations.

2⁵³⁷⁴⁹¹ is an apocalyptic number.

537491 is a deficient number, since it is larger than the sum of its proper divisors (28309).

537491 is a wasteful number, since it uses less digits than its factorization.

537491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28308.

The product of its digits is 3780, while the sum is 29.

The square root of 537491 is about 733.1377769560. The cubic root of 537491 is about 81.3062127768.

The spelling of 537491 in words is "five hundred thirty-seven thousand, four hundred ninety-one".