27157693 has 2 divisors, whose sum is σ = 27157694. Its totient is φ = 27157692.

The previous prime is 27157673. The next prime is 27157699. The reversal of 27157693 is 39675172.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14002564 + 13155129 = 3742^2 + 3627^2 .

It is a cyclic number.

It is not a de Polignac number, because 27157693 - 2¹³ = 27149501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27157699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13578846 + 13578847.

It is an arithmetic number, because the mean of its divisors is an integer number (13578847).

Almost surely, 2^27157693 is an apocalyptic number.

It is an amenable number.

27157693 is a deficient number, since it is larger than the sum of its proper divisors (1).

27157693 is an equidigital number, since it uses as much as digits as its factorization.

27157693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 40.

The square root of 27157693 is about 5211.3043472820. The cubic root of 27157693 is about 300.5829147824.

The spelling of 27157693 in words is "twenty-seven million, one hundred fifty-seven thousand, six hundred ninety-three".