213150565 has 4 divisors (see below), whose sum is σ = 255780684. Its totient is φ = 170520448.

The previous prime is 213150563. The next prime is 213150571. The reversal of 213150565 is 565051312.

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 62204769 + 150945796 = 7887^2 + 12286^2 .

It is a cyclic number.

It is not a de Polignac number, because 213150565 - 2¹ = 213150563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213150563) 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, 21315052 + ... + 21315061.

It is an arithmetic number, because the mean of its divisors is an integer number (63945171).

Almost surely, 2^213150565 is an apocalyptic number.

It is an amenable number.

213150565 is a deficient number, since it is larger than the sum of its proper divisors (42630119).

213150565 is an equidigital number, since it uses as much as digits as its factorization.

213150565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42630118.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 213150565 is about 14599.6768799861. The cubic root of 213150565 is about 597.3499468553.

The spelling of 213150565 in words is "two hundred thirteen million, one hundred fifty thousand, five hundred sixty-five".