213225546 has 16 divisors (see below), whose sum is σ = 426741408. Its totient is φ = 71026800.

The previous prime is 213225541. The next prime is 213225547. The reversal of 213225546 is 645522312.

It is not an unprimeable number, because it can be changed into a prime (213225541) 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, 1885 + ... + 20736.

It is an arithmetic number, because the mean of its divisors is an integer number (26671338).

Almost surely, 2^213225546 is an apocalyptic number.

213225546 is an abundant number, since it is smaller than the sum of its proper divisors (213515862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213225546 is a wasteful number, since it uses less digits than its factorization.

213225546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24197.

The product of its digits is 14400, while the sum is 30.

The square root of 213225546 is about 14602.2445534925. The cubic root of 213225546 is about 597.4199828655.

Adding to 213225546 its reverse (645522312), we get a palindrome (858747858).

The spelling of 213225546 in words is "two hundred thirteen million, two hundred twenty-five thousand, five hundred forty-six".