213553500 has 48 divisors (see below), whose sum is σ = 621872160. Its totient is φ = 56947200.

The previous prime is 213553499. The next prime is 213553517. The reversal of 213553500 is 5355312.

213553500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69685 + ... + 72684.

It is an arithmetic number, because the mean of its divisors is an integer number (12955670).

Almost surely, 2^213553500 is an apocalyptic number.

213553500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213553500 is an abundant number, since it is smaller than the sum of its proper divisors (408318660).

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

213553500 is a wasteful number, since it uses less digits than its factorization.

213553500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142391 (or 142379 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 213553500 is about 14613.4698138396. The cubic root of 213553500 is about 597.7261155242.

The spelling of 213553500 in words is "two hundred thirteen million, five hundred fifty-three thousand, five hundred".