545099993 has 2 divisors, whose sum is σ = 545099994. Its totient is φ = 545099992.

The previous prime is 545099983. The next prime is 545100029. The reversal of 545099993 is 399990545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458088409 + 87011584 = 21403^2 + 9328^2 .

It is a cyclic number.

It is not a de Polignac number, because 545099993 - 2¹⁸ = 544837849 is a prime.

It is not a weakly prime, because it can be changed into another prime (545099903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272549996 + 272549997.

It is an arithmetic number, because the mean of its divisors is an integer number (272549997).

Almost surely, 2^545099993 is an apocalyptic number.

It is an amenable number.

545099993 is a deficient number, since it is larger than the sum of its proper divisors (1).

545099993 is an equidigital number, since it uses as much as digits as its factorization.

545099993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1968300, while the sum is 53.

The square root of 545099993 is about 23347.3765763950. The cubic root of 545099993 is about 816.8808695559.

The spelling of 545099993 in words is "five hundred forty-five million, ninety-nine thousand, nine hundred ninety-three".