213093553 has 4 divisors (see below), whose sum is σ = 213202468. Its totient is φ = 212984640.

The previous prime is 213093547. The next prime is 213093697. The reversal of 213093553 is 355390312.

213093553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183412849 + 29680704 = 13543^2 + 5448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213093553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213093953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51468 + ... + 55453.

It is an arithmetic number, because the mean of its divisors is an integer number (53300617).

Almost surely, 2^213093553 is an apocalyptic number.

It is an amenable number.

213093553 is a deficient number, since it is larger than the sum of its proper divisors (108915).

213093553 is a wasteful number, since it uses less digits than its factorization.

213093553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108914.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 213093553 is about 14597.7242404424. The cubic root of 213093553 is about 597.2966837985.

The spelling of 213093553 in words is "two hundred thirteen million, ninety-three thousand, five hundred fifty-three".