213552605 has 16 divisors (see below), whose sum is σ = 294196224. Its totient is φ = 145774080.

The previous prime is 213552553. The next prime is 213552613. The reversal of 213552605 is 506255312.

It is a happy number.

It is not a de Polignac number, because 213552605 - 2¹⁶ = 213487069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5876 + ... + 21485.

It is an arithmetic number, because the mean of its divisors is an integer number (18387264).

Almost surely, 2^213552605 is an apocalyptic number.

It is an amenable number.

213552605 is a deficient number, since it is larger than the sum of its proper divisors (80643619).

213552605 is a wasteful number, since it uses less digits than its factorization.

213552605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27596.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 213552605 is about 14613.4391913745. The cubic root of 213552605 is about 597.7252805022.

The spelling of 213552605 in words is "two hundred thirteen million, five hundred fifty-two thousand, six hundred five".