545109949 has 2 divisors, whose sum is σ = 545109950. Its totient is φ = 545109948.

The previous prime is 545109931. The next prime is 545109967. The reversal of 545109949 is 949901545.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (545109931) and next prime (545109967).

It can be written as a sum of positive squares in only one way, i.e., 500953924 + 44156025 = 22382^2 + 6645^2 .

It is a cyclic number.

It is not a de Polignac number, because 545109949 - 2¹³ = 545101757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 545109899 and 545109908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545109349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272554974 + 272554975.

It is an arithmetic number, because the mean of its divisors is an integer number (272554975).

Almost surely, 2^545109949 is an apocalyptic number.

It is an amenable number.

545109949 is a deficient number, since it is larger than the sum of its proper divisors (1).

545109949 is an equidigital number, since it uses as much as digits as its factorization.

545109949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 545109949 is about 23347.5897899548. The cubic root of 545109949 is about 816.8858428431.

The spelling of 545109949 in words is "five hundred forty-five million, one hundred nine thousand, nine hundred forty-nine".