545145431 has 2 divisors, whose sum is σ = 545145432. Its totient is φ = 545145430.

The previous prime is 545145421. The next prime is 545145437. The reversal of 545145431 is 134541545.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 545145431 - 2¹⁴ = 545129047 is a prime.

It is a super-2 number, since 2×545145431² = 594367081880351522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545145437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272572715 + 272572716.

It is an arithmetic number, because the mean of its divisors is an integer number (272572716).

Almost surely, 2^545145431 is an apocalyptic number.

545145431 is a deficient number, since it is larger than the sum of its proper divisors (1).

545145431 is an equidigital number, since it uses as much as digits as its factorization.

545145431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24000, while the sum is 32.

The square root of 545145431 is about 23348.3496418912. The cubic root of 545145431 is about 816.9035665547.

Adding to 545145431 its reverse (134541545), we get a palindrome (679686976).

The spelling of 545145431 in words is "five hundred forty-five million, one hundred forty-five thousand, four hundred thirty-one".