213562249 has 4 divisors (see below), whose sum is σ = 216570240. Its totient is φ = 210554260.

The previous prime is 213562243. The next prime is 213562253. The reversal of 213562249 is 942265312.

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 213562249 - 2¹¹ = 213560201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213562243) 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, 1503889 + ... + 1504030.

It is an arithmetic number, because the mean of its divisors is an integer number (54142560).

Almost surely, 2^213562249 is an apocalyptic number.

It is an amenable number.

213562249 is a deficient number, since it is larger than the sum of its proper divisors (3007991).

213562249 is an equidigital number, since it uses as much as digits as its factorization.

213562249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007990.

The product of its digits is 25920, while the sum is 34.

The square root of 213562249 is about 14613.7691578867. The cubic root of 213562249 is about 597.7342780914.

The spelling of 213562249 in words is "two hundred thirteen million, five hundred sixty-two thousand, two hundred forty-nine".