545137 has 4 divisors (see below), whose sum is σ = 547056. Its totient is φ = 543220.

The previous prime is 545131. The next prime is 545141. The reversal of 545137 is 731545.

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: 731545 = 5 ⋅146309.

It is a cyclic number.

It is not a de Polignac number, because 545137 - 2¹⁹ = 20849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545131) 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, 439 + ... + 1132.

It is an arithmetic number, because the mean of its divisors is an integer number (136764).

2⁵⁴⁵¹³⁷ is an apocalyptic number.

It is an amenable number.

545137 is a deficient number, since it is larger than the sum of its proper divisors (1919).

545137 is a wasteful number, since it uses less digits than its factorization.

545137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918.

The product of its digits is 2100, while the sum is 25.

The square root of 545137 is about 738.3339352894. Note that the first 3 decimals coincide. The cubic root of 545137 is about 81.6899355232.

The spelling of 545137 in words is "five hundred forty-five thousand, one hundred thirty-seven".