213252645 has 32 divisors (see below), whose sum is σ = 356227200. Its totient is φ = 108829440.

The previous prime is 213252617. The next prime is 213252661. The reversal of 213252645 is 546252312.

It is not a de Polignac number, because 213252645 - 2⁶ = 213252581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30706 + ... + 37004.

It is an arithmetic number, because the mean of its divisors is an integer number (11132100).

Almost surely, 2^213252645 is an apocalyptic number.

It is an amenable number.

213252645 is a deficient number, since it is larger than the sum of its proper divisors (142974555).

213252645 is a wasteful number, since it uses less digits than its factorization.

213252645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6405.

The product of its digits is 14400, while the sum is 30.

The square root of 213252645 is about 14603.1724293045. The cubic root of 213252645 is about 597.4452906497.

The spelling of 213252645 in words is "two hundred thirteen million, two hundred fifty-two thousand, six hundred forty-five".