213652521 has 12 divisors (see below), whose sum is σ = 309786048. Its totient is φ = 141891864.

The previous prime is 213652519. The next prime is 213652529. The reversal of 213652521 is 125256312.

It is a happy number.

213652521 is a `hidden beast` number, since 2 + 1 + 3 + 652 + 5 + 2 + 1 = 666.

It is not a de Polignac number, because 213652521 - 2¹ = 213652519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213652529) 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, 42765 + ... + 47498.

It is an arithmetic number, because the mean of its divisors is an integer number (25815504).

Almost surely, 2^213652521 is an apocalyptic number.

It is an amenable number.

213652521 is a deficient number, since it is larger than the sum of its proper divisors (96133527).

213652521 is a wasteful number, since it uses less digits than its factorization.

213652521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90532 (or 90529 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 213652521 is about 14616.8574255891. The cubic root of 213652521 is about 597.8184862759.

The spelling of 213652521 in words is "two hundred thirteen million, six hundred fifty-two thousand, five hundred twenty-one".