545916449 has 4 divisors (see below), whose sum is σ = 587910036. Its totient is φ = 503922864.

The previous prime is 545916443. The next prime is 545916451. The reversal of 545916449 is 944619545.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 321126400 + 224790049 = 17920^2 + 14993^2 .

It is a cyclic number.

It is not a de Polignac number, because 545916449 - 2⁸ = 545916193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (545916443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20996774 + ... + 20996799.

It is an arithmetic number, because the mean of its divisors is an integer number (146977509).

Almost surely, 2^545916449 is an apocalyptic number.

It is an amenable number.

545916449 is a deficient number, since it is larger than the sum of its proper divisors (41993587).

545916449 is a wasteful number, since it uses less digits than its factorization.

545916449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41993586.

The product of its digits is 777600, while the sum is 47.

The square root of 545916449 is about 23364.8549963401. The cubic root of 545916449 is about 817.2885101025.

The spelling of 545916449 in words is "five hundred forty-five million, nine hundred sixteen thousand, four hundred forty-nine".