545133623 has 2 divisors, whose sum is σ = 545133624. Its totient is φ = 545133622.

The previous prime is 545133613. The next prime is 545133643. The reversal of 545133623 is 326331545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545133623 - 2²⁸ = 276698167 is a prime.

It is a super-2 number, since 2×545133623² = 594341333850212258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 545133623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545133613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272566811 + 272566812.

It is an arithmetic number, because the mean of its divisors is an integer number (272566812).

Almost surely, 2^545133623 is an apocalyptic number.

545133623 is a deficient number, since it is larger than the sum of its proper divisors (1).

545133623 is an equidigital number, since it uses as much as digits as its factorization.

545133623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 32.

The square root of 545133623 is about 23348.0967746838. The cubic root of 545133623 is about 816.8976683934.

The spelling of 545133623 in words is "five hundred forty-five million, one hundred thirty-three thousand, six hundred twenty-three".