213050505 has 16 divisors (see below), whose sum is σ = 341251200. Its totient is φ = 113503488.

The previous prime is 213050503. The next prime is 213050521. The reversal of 213050505 is 505050312.

It is not a de Polignac number, because 213050505 - 2¹ = 213050503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213050503) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7521 + ... + 21969.

It is an arithmetic number, because the mean of its divisors is an integer number (21328200).

Almost surely, 2^213050505 is an apocalyptic number.

It is an amenable number.

213050505 is a deficient number, since it is larger than the sum of its proper divisors (128200695).

213050505 is a wasteful number, since it uses less digits than its factorization.

213050505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15440.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 213050505 is about 14596.2496895607. The cubic root of 213050505 is about 597.2564602145.

The spelling of 213050505 in words is "two hundred thirteen million, fifty thousand, five hundred five".