27850513 has 2 divisors, whose sum is σ = 27850514. Its totient is φ = 27850512.

The previous prime is 27850499. The next prime is 27850519. The reversal of 27850513 is 31505872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20277009 + 7573504 = 4503^2 + 2752^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27850513 is a prime.

It is not a weakly prime, because it can be changed into another prime (27850519) 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 as a sum of consecutive naturals, namely, 13925256 + 13925257.

It is an arithmetic number, because the mean of its divisors is an integer number (13925257).

Almost surely, 2^27850513 is an apocalyptic number.

It is an amenable number.

27850513 is a deficient number, since it is larger than the sum of its proper divisors (1).

27850513 is an equidigital number, since it uses as much as digits as its factorization.

27850513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 27850513 is about 5277.3585248683. The cubic root of 27850513 is about 303.1175390944.

The spelling of 27850513 in words is "twenty-seven million, eight hundred fifty thousand, five hundred thirteen".