213365545 has 8 divisors (see below), whose sum is σ = 260869896. Its totient is φ = 167471616.

The previous prime is 213365543. The next prime is 213365561. The reversal of 213365545 is 545563312.

It can be written as a sum of positive squares in 4 ways, for example, as 13454224 + 199911321 = 3668^2 + 14139^2 .

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 213365545 - 2¹ = 213365543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213365545.

It is not an unprimeable number, because it can be changed into a prime (213365543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402312 + ... + 402841.

It is an arithmetic number, because the mean of its divisors is an integer number (32608737).

Almost surely, 2^213365545 is an apocalyptic number.

It is an amenable number.

213365545 is a deficient number, since it is larger than the sum of its proper divisors (47504351).

213365545 is an equidigital number, since it uses as much as digits as its factorization.

213365545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805211.

The product of its digits is 54000, while the sum is 34.

The square root of 213365545 is about 14607.0375162111. The cubic root of 213365545 is about 597.5507050099.

The spelling of 213365545 in words is "two hundred thirteen million, three hundred sixty-five thousand, five hundred forty-five".