27500013 has 16 divisors (see below), whose sum is σ = 40821760. Its totient is φ = 18296928.

The previous prime is 27500003. The next prime is 27500023. The reversal of 27500013 is 31000572.

It is an interprime number because it is at equal distance from previous prime (27500003) and next prime (27500023).

It is not a de Polignac number, because 27500013 - 2⁵ = 27499981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27500003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24756 + ... + 25842.

It is an arithmetic number, because the mean of its divisors is an integer number (2551360).

Almost surely, 2^27500013 is an apocalyptic number.

It is an amenable number.

27500013 is a deficient number, since it is larger than the sum of its proper divisors (13321747).

27500013 is a wasteful number, since it uses less digits than its factorization.

27500013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033 (or 2027 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 27500013 is about 5244.0454803520. The cubic root of 27500013 is about 301.8405844026.

Adding to 27500013 its reverse (31000572), we get a palindrome (58500585).

The spelling of 27500013 in words is "twenty-seven million, five hundred thousand, thirteen".