213250538 has 4 divisors (see below), whose sum is σ = 319875810. Its totient is φ = 106625268.

The previous prime is 213250529. The next prime is 213250579. The reversal of 213250538 is 835052312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 174847729 + 38402809 = 13223^2 + 6197^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213250538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53312633 + ... + 53312636.

Almost surely, 2^213250538 is an apocalyptic number.

213250538 is a deficient number, since it is larger than the sum of its proper divisors (106625272).

213250538 is a wasteful number, since it uses less digits than its factorization.

213250538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106625271.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 213250538 is about 14603.1002872678. The cubic root of 213250538 is about 597.4433229971.

The spelling of 213250538 in words is "two hundred thirteen million, two hundred fifty thousand, five hundred thirty-eight".