27751051 has 2 divisors, whose sum is σ = 27751052. Its totient is φ = 27751050.

The previous prime is 27751049. The next prime is 27751079. The reversal of 27751051 is 15015772.

It is an a-pointer prime, because the next prime (27751079) can be obtained adding 27751051 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27751051 - 2¹ = 27751049 is a prime.

Together with 27751049, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27751081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13875525 + 13875526.

It is an arithmetic number, because the mean of its divisors is an integer number (13875526).

Almost surely, 2^27751051 is an apocalyptic number.

27751051 is a deficient number, since it is larger than the sum of its proper divisors (1).

27751051 is an equidigital number, since it uses as much as digits as its factorization.

27751051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 27751051 is about 5267.9266319872. The cubic root of 27751051 is about 302.7562694133.

The spelling of 27751051 in words is "twenty-seven million, seven hundred fifty-one thousand, fifty-one".