27755131 has 2 divisors, whose sum is σ = 27755132. Its totient is φ = 27755130.

The previous prime is 27755113. The next prime is 27755141. The reversal of 27755131 is 13155772.

Together with previous prime (27755113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27755131 - 2⁵ = 27755099 is a prime.

It is a super-2 number, since 2×27755131² = 1540694593654322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27755093 and 27755102.

It is not a weakly prime, because it can be changed into another prime (27755141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13877565 + 13877566.

It is an arithmetic number, because the mean of its divisors is an integer number (13877566).

Almost surely, 2^27755131 is an apocalyptic number.

27755131 is a deficient number, since it is larger than the sum of its proper divisors (1).

27755131 is an equidigital number, since it uses as much as digits as its factorization.

27755131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7350, while the sum is 31.

The square root of 27755131 is about 5268.3138668838. The cubic root of 27755131 is about 302.7711059090.

The spelling of 27755131 in words is "twenty-seven million, seven hundred fifty-five thousand, one hundred thirty-one".