27518429 has 2 divisors, whose sum is σ = 27518430. Its totient is φ = 27518428.

The previous prime is 27518399. The next prime is 27518437. The reversal of 27518429 is 92481572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20748025 + 6770404 = 4555^2 + 2602^2 .

It is a cyclic number.

It is not a de Polignac number, because 27518429 - 2²⁰ = 26469853 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 27518392 and 27518401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27518459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13759214 + 13759215.

It is an arithmetic number, because the mean of its divisors is an integer number (13759215).

Almost surely, 2^27518429 is an apocalyptic number.

It is an amenable number.

27518429 is a deficient number, since it is larger than the sum of its proper divisors (1).

27518429 is an equidigital number, since it uses as much as digits as its factorization.

27518429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 27518429 is about 5245.8010827709. The cubic root of 27518429 is about 301.9079474717.

The spelling of 27518429 in words is "twenty-seven million, five hundred eighteen thousand, four hundred twenty-nine".