213613545 has 8 divisors (see below), whose sum is σ = 341781696. Its totient is φ = 113927216.

The previous prime is 213613493. The next prime is 213613553. The reversal of 213613545 is 545316312.

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 213613545 - 2⁸ = 213613289 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7120437 + ... + 7120466.

It is an arithmetic number, because the mean of its divisors is an integer number (42722712).

Almost surely, 2^213613545 is an apocalyptic number.

It is an amenable number.

213613545 is a deficient number, since it is larger than the sum of its proper divisors (128168151).

213613545 is a wasteful number, since it uses less digits than its factorization.

213613545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14240911.

The product of its digits is 10800, while the sum is 30.

The square root of 213613545 is about 14615.5241096582. The cubic root of 213613545 is about 597.7821313100.

Adding to 213613545 its reverse (545316312), we get a palindrome (758929857).

The spelling of 213613545 in words is "two hundred thirteen million, six hundred thirteen thousand, five hundred forty-five".