213255550 has 24 divisors (see below), whose sum is σ = 397548216. Its totient is φ = 85110240.

The previous prime is 213255547. The next prime is 213255551. The reversal of 213255550 is 55552312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213255551) 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, 18784 + ... + 27916.

It is an arithmetic number, because the mean of its divisors is an integer number (16564509).

Almost surely, 2^213255550 is an apocalyptic number.

213255550 is a deficient number, since it is larger than the sum of its proper divisors (184292666).

213255550 is a wasteful number, since it uses less digits than its factorization.

213255550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9612 (or 9607 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 213255550 is about 14603.2718936545. The cubic root of 213255550 is about 597.4480035050.

The spelling of 213255550 in words is "two hundred thirteen million, two hundred fifty-five thousand, five hundred fifty".