213052445 has 4 divisors (see below), whose sum is σ = 255662940. Its totient is φ = 170441952.

The previous prime is 213052409. The next prime is 213052459. The reversal of 213052445 is 544250312.

It is a happy number.

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 66618244 + 146434201 = 8162^2 + 12101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213052445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21305240 + ... + 21305249.

It is an arithmetic number, because the mean of its divisors is an integer number (63915735).

Almost surely, 2^213052445 is an apocalyptic number.

It is an amenable number.

213052445 is a deficient number, since it is larger than the sum of its proper divisors (42610495).

213052445 is an equidigital number, since it uses as much as digits as its factorization.

213052445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42610494.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 213052445 is about 14596.3161448360. The cubic root of 213052445 is about 597.2582730460.

The spelling of 213052445 in words is "two hundred thirteen million, fifty-two thousand, four hundred forty-five".