215355013 has 4 divisors (see below), whose sum is σ = 216256320. Its totient is φ = 214453708.

The previous prime is 215355011. The next prime is 215355029. The reversal of 215355013 is 310553512.

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 215355013 - 2¹ = 215355011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215355011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450295 + ... + 450772.

It is an arithmetic number, because the mean of its divisors is an integer number (54064080).

Almost surely, 2^215355013 is an apocalyptic number.

It is an amenable number.

215355013 is a deficient number, since it is larger than the sum of its proper divisors (901307).

215355013 is an equidigital number, since it uses as much as digits as its factorization.

215355013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901306.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 215355013 is about 14674.9791481964. The cubic root of 215355013 is about 599.4021943934.

The spelling of 215355013 in words is "two hundred fifteen million, three hundred fifty-five thousand, thirteen".