1545745273 has 2 divisors, whose sum is σ = 1545745274. Its totient is φ = 1545745272.

The previous prime is 1545745231. The next prime is 1545745283. The reversal of 1545745273 is 3725475451.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 880724329 + 665020944 = 29677^2 + 25788^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1545745273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1545745283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772872636 + 772872637.

It is an arithmetic number, because the mean of its divisors is an integer number (772872637).

Almost surely, 2^1545745273 is an apocalyptic number.

It is an amenable number.

1545745273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545745273 is an equidigital number, since it uses as much as digits as its factorization.

1545745273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588000, while the sum is 43.

The square root of 1545745273 is about 39315.9671507646. The cubic root of 1545745273 is about 1156.2346381090.

The spelling of 1545745273 in words is "one billion, five hundred forty-five million, seven hundred forty-five thousand, two hundred seventy-three".