27955013 has 4 divisors (see below), whose sum is σ = 28372320. Its totient is φ = 27537708.

The previous prime is 27954991. The next prime is 27955033. The reversal of 27955013 is 31055972.

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 27955013 - 2¹⁸ = 27692869 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 (27955033) 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, 208553 + ... + 208686.

It is an arithmetic number, because the mean of its divisors is an integer number (7093080).

Almost surely, 2^27955013 is an apocalyptic number.

It is an amenable number.

27955013 is a deficient number, since it is larger than the sum of its proper divisors (417307).

27955013 is an equidigital number, since it uses as much as digits as its factorization.

27955013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417306.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 27955013 is about 5287.2500413731. The cubic root of 27955013 is about 303.4961825987.

The spelling of 27955013 in words is "twenty-seven million, nine hundred fifty-five thousand, thirteen".