537566 has 4 divisors (see below), whose sum is σ = 806352. Its totient is φ = 268782.

The previous prime is 537547. The next prime is 537569. The reversal of 537566 is 665735.

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

It is a Curzon number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134390 + ... + 134393.

It is an arithmetic number, because the mean of its divisors is an integer number (201588).

2⁵³⁷⁵⁶⁶ is an apocalyptic number.

537566 is a deficient number, since it is larger than the sum of its proper divisors (268786).

537566 is a wasteful number, since it uses less digits than its factorization.

537566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268785.

The product of its digits is 18900, while the sum is 32.

The square root of 537566 is about 733.1889251755. The cubic root of 537566 is about 81.3099943485.

The spelling of 537566 in words is "five hundred thirty-seven thousand, five hundred sixty-six".