27553061 has 2 divisors, whose sum is σ = 27553062. Its totient is φ = 27553060.

The previous prime is 27553037. The next prime is 27553063. The reversal of 27553061 is 16035572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20160100 + 7392961 = 4490^2 + 2719^2 .

It is a cyclic number.

It is not a de Polignac number, because 27553061 - 2¹⁸ = 27290917 is a prime.

It is a Sophie Germain prime.

Together with 27553063, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27553063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13776530 + 13776531.

It is an arithmetic number, because the mean of its divisors is an integer number (13776531).

Almost surely, 2^27553061 is an apocalyptic number.

It is an amenable number.

27553061 is a deficient number, since it is larger than the sum of its proper divisors (1).

27553061 is an equidigital number, since it uses as much as digits as its factorization.

27553061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 27553061 is about 5249.1009706425. The cubic root of 27553061 is about 302.0345449716.

The spelling of 27553061 in words is "twenty-seven million, five hundred fifty-three thousand, sixty-one".