545537 has 4 divisors (see below), whose sum is σ = 569280. Its totient is φ = 521796.

The previous prime is 545533. The next prime is 545543. The reversal of 545537 is 735545.

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.

It is a cyclic number.

It is not a de Polignac number, because 545537 - 2² = 545533 is a prime.

It is a super-2 number, since 2×545537² = 595221236738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545533) 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, 11837 + ... + 11882.

It is an arithmetic number, because the mean of its divisors is an integer number (142320).

2⁵⁴⁵⁵³⁷ is an apocalyptic number.

It is an amenable number.

545537 is a deficient number, since it is larger than the sum of its proper divisors (23743).

545537 is a wasteful number, since it uses less digits than its factorization.

545537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23742.

The product of its digits is 10500, while the sum is 29.

The square root of 545537 is about 738.6047657577. The cubic root of 545537 is about 81.7099109211.

The spelling of 545537 in words is "five hundred forty-five thousand, five hundred thirty-seven".