213621050 has 24 divisors (see below), whose sum is σ = 397832796. Its totient is φ = 85341440.

The previous prime is 213621019. The next prime is 213621053. The reversal of 213621050 is 50126312.

It can be written as a sum of positive squares in 6 ways, for example, as 140398801 + 73222249 = 11849^2 + 8557^2 .

It is not an unprimeable number, because it can be changed into a prime (213621053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46664 + ... + 51036.

Almost surely, 2^213621050 is an apocalyptic number.

213621050 is a deficient number, since it is larger than the sum of its proper divisors (184211746).

213621050 is a wasteful number, since it uses less digits than its factorization.

213621050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5362 (or 5357 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 213621050 is about 14615.7808549526. The cubic root of 213621050 is about 597.7891319621.

Adding to 213621050 its reverse (50126312), we get a palindrome (263747362).

The spelling of 213621050 in words is "two hundred thirteen million, six hundred twenty-one thousand, fifty".