545506537 has 2 divisors, whose sum is σ = 545506538. Its totient is φ = 545506536.

The previous prime is 545506513. The next prime is 545506553. The reversal of 545506537 is 735605545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538425616 + 7080921 = 23204^2 + 2661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545506537 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545506537.

It is not a weakly prime, because it can be changed into another prime (545506237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272753268 + 272753269.

It is an arithmetic number, because the mean of its divisors is an integer number (272753269).

Almost surely, 2^545506537 is an apocalyptic number.

It is an amenable number.

545506537 is a deficient number, since it is larger than the sum of its proper divisors (1).

545506537 is an equidigital number, since it uses as much as digits as its factorization.

545506537 is an evil number, because the sum of its binary digits is even.

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

The square root of 545506537 is about 23356.0813708122. The cubic root of 545506537 is about 817.0838998827.

The spelling of 545506537 in words is "five hundred forty-five million, five hundred six thousand, five hundred thirty-seven".