545690137 has 2 divisors, whose sum is σ = 545690138. Its totient is φ = 545690136.

The previous prime is 545690053. The next prime is 545690141. The reversal of 545690137 is 731096545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295702416 + 249987721 = 17196^2 + 15811^2 .

It is a cyclic number.

It is not a de Polignac number, because 545690137 - 2²³ = 537301529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545690137.

It is not a weakly prime, because it can be changed into another prime (545690237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272845068 + 272845069.

It is an arithmetic number, because the mean of its divisors is an integer number (272845069).

Almost surely, 2^545690137 is an apocalyptic number.

It is an amenable number.

545690137 is a deficient number, since it is larger than the sum of its proper divisors (1).

545690137 is an equidigital number, since it uses as much as digits as its factorization.

545690137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 545690137 is about 23360.0114940040. The cubic root of 545690137 is about 817.1755576764.

The spelling of 545690137 in words is "five hundred forty-five million, six hundred ninety thousand, one hundred thirty-seven".