27465551 has 2 divisors, whose sum is σ = 27465552. Its totient is φ = 27465550.

The previous prime is 27465547. The next prime is 27465553. The reversal of 27465551 is 15556472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27465551 - 2² = 27465547 is a prime.

Together with 27465553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27465553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13732775 + 13732776.

It is an arithmetic number, because the mean of its divisors is an integer number (13732776).

Almost surely, 2^27465551 is an apocalyptic number.

27465551 is a deficient number, since it is larger than the sum of its proper divisors (1).

27465551 is an equidigital number, since it uses as much as digits as its factorization.

27465551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42000, while the sum is 35.

The square root of 27465551 is about 5240.7586282904. The cubic root of 27465551 is about 301.7144465423.

The spelling of 27465551 in words is "twenty-seven million, four hundred sixty-five thousand, five hundred fifty-one".