213445049 has 8 divisors (see below), whose sum is σ = 217135968. Its totient is φ = 209769120.

The previous prime is 213445027. The next prime is 213445061. The reversal of 213445049 is 940544312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213445049 - 2²⁰ = 212396473 is a prime.

It is a super-2 number, since 2×213445049² = 91117577885224802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213445079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27134 + ... + 34104.

It is an arithmetic number, because the mean of its divisors is an integer number (27141996).

Almost surely, 2^213445049 is an apocalyptic number.

It is an amenable number.

213445049 is a deficient number, since it is larger than the sum of its proper divisors (3690919).

213445049 is an equidigital number, since it uses as much as digits as its factorization.

213445049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7495.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 213445049 is about 14609.7586906834. The cubic root of 213445049 is about 597.6249153231.

The spelling of 213445049 in words is "two hundred thirteen million, four hundred forty-five thousand, forty-nine".