213315553 has 16 divisors (see below), whose sum is σ = 236079360. Its totient is φ = 191136400.

The previous prime is 213315511. The next prime is 213315569. The reversal of 213315553 is 355513312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213315553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213315653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257526 + ... + 258352.

It is an arithmetic number, because the mean of its divisors is an integer number (14754960).

Almost surely, 2^213315553 is an apocalyptic number.

It is an amenable number.

213315553 is a deficient number, since it is larger than the sum of its proper divisors (22763807).

213315553 is a wasteful number, since it uses less digits than its factorization.

213315553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148.

The product of its digits is 6750, while the sum is 28.

The square root of 213315553 is about 14605.3261860186. The cubic root of 213315553 is about 597.5040322318.

Adding to 213315553 its reverse (355513312), we get a palindrome (568828865).

The spelling of 213315553 in words is "two hundred thirteen million, three hundred fifteen thousand, five hundred fifty-three".