545605537 has 4 divisors (see below), whose sum is σ = 545896260. Its totient is φ = 545314816.

The previous prime is 545605513. The next prime is 545605559. The reversal of 545605537 is 735506545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 735506545 = 5 ⋅147101309.

It can be written as a sum of positive squares in 2 ways, for example, as 210569121 + 335036416 = 14511^2 + 18304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545605537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545605537.

It is not an unprimeable number, because it can be changed into a prime (545605337) 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 in 3 ways as a sum of consecutive naturals, for example, 142528 + ... + 146305.

It is an arithmetic number, because the mean of its divisors is an integer number (136474065).

Almost surely, 2^545605537 is an apocalyptic number.

It is an amenable number.

545605537 is a deficient number, since it is larger than the sum of its proper divisors (290723).

545605537 is a wasteful number, since it uses less digits than its factorization.

545605537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290722.

The product of its (nonzero) digits is 315000, while the sum is 40.

The square root of 545605537 is about 23358.2006370354. The cubic root of 545605537 is about 817.1333257573.

The spelling of 545605537 in words is "five hundred forty-five million, six hundred five thousand, five hundred thirty-seven".