545317805 has 8 divisors (see below), whose sum is σ = 654523800. Its totient is φ = 436159296.

The previous prime is 545317783. The next prime is 545317813. The reversal of 545317805 is 508713545.

It can be written as a sum of positive squares in 4 ways, for example, as 515524 + 544802281 = 718^2 + 23341^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 545317805 - 2¹⁸ = 545055661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22391 + ... + 39899.

It is an arithmetic number, because the mean of its divisors is an integer number (81815475).

Almost surely, 2^545317805 is an apocalyptic number.

It is an amenable number.

545317805 is a deficient number, since it is larger than the sum of its proper divisors (109205995).

545317805 is a wasteful number, since it uses less digits than its factorization.

545317805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23743.

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 545317805 is about 23352.0407031163. The cubic root of 545317805 is about 816.9896586250.

The spelling of 545317805 in words is "five hundred forty-five million, three hundred seventeen thousand, eight hundred five".