213885541 has 4 divisors (see below), whose sum is σ = 213968992. Its totient is φ = 213802092.

The previous prime is 213885521. The next prime is 213885559. The reversal of 213885541 is 145588312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213885541 - 2⁹ = 213885029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213885541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213885521) 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, 37755 + ... + 43048.

It is an arithmetic number, because the mean of its divisors is an integer number (53492248).

Almost surely, 2^213885541 is an apocalyptic number.

It is an amenable number.

213885541 is a deficient number, since it is larger than the sum of its proper divisors (83451).

213885541 is an equidigital number, since it uses as much as digits as its factorization.

213885541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83450.

The product of its digits is 38400, while the sum is 37.

The square root of 213885541 is about 14624.8261870013. The cubic root of 213885541 is about 598.0357441079.

The spelling of 213885541 in words is "two hundred thirteen million, eight hundred eighty-five thousand, five hundred forty-one".