213520552 has 32 divisors (see below), whose sum is σ = 458323200. Its totient is φ = 91353024.

The previous prime is 213520519. The next prime is 213520609. The reversal of 213520552 is 255025312.

It is a happy number.

It is a super-2 number, since 2×213520552² = 91182052252769408, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33649 + ... + 39487.

It is an arithmetic number, because the mean of its divisors is an integer number (14322600).

Almost surely, 2^213520552 is an apocalyptic number.

It is an amenable number.

213520552 is an abundant number, since it is smaller than the sum of its proper divisors (244802648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213520552 is a wasteful number, since it uses less digits than its factorization.

213520552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6505 (or 6501 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 213520552 is about 14612.3424542405. The cubic root of 213520552 is about 597.6953739802.

Adding to 213520552 its reverse (255025312), we get a palindrome (468545864).

The spelling of 213520552 in words is "two hundred thirteen million, five hundred twenty thousand, five hundred fifty-two".