213013550 has 12 divisors (see below), whose sum is σ = 396205296. Its totient is φ = 85205400.

The previous prime is 213013543. The next prime is 213013583. The reversal of 213013550 is 55310312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2130086 + ... + 2130185.

It is an arithmetic number, because the mean of its divisors is an integer number (33017108).

Almost surely, 2^213013550 is an apocalyptic number.

213013550 is a deficient number, since it is larger than the sum of its proper divisors (183191746).

213013550 is a wasteful number, since it uses less digits than its factorization.

213013550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260283 (or 4260278 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 213013550 is about 14594.9837272948. The cubic root of 213013550 is about 597.2219255412.

Adding to 213013550 its reverse (55310312), we get a palindrome (268323862).

The spelling of 213013550 in words is "two hundred thirteen million, thirteen thousand, five hundred fifty".