213651056 has 20 divisors (see below), whose sum is σ = 421760952. Its totient is φ = 104809536.

The previous prime is 213651001. The next prime is 213651059. The reversal of 213651056 is 650156312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213651059) 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 3 ways as a sum of consecutive naturals, for example, 125126 + ... + 126821.

Almost surely, 2^213651056 is an apocalyptic number.

It is an amenable number.

213651056 is a deficient number, since it is larger than the sum of its proper divisors (208109896).

213651056 is a wasteful number, since it uses less digits than its factorization.

213651056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252008 (or 252002 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 213651056 is about 14616.8073121322. The cubic root of 213651056 is about 597.8171198733.

The spelling of 213651056 in words is "two hundred thirteen million, six hundred fifty-one thousand, fifty-six".