27151493 has 2 divisors, whose sum is σ = 27151494. Its totient is φ = 27151492.

The previous prime is 27151489. The next prime is 27151507. The reversal of 27151493 is 39415172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21921124 + 5230369 = 4682^2 + 2287^2 .

It is a cyclic number.

It is not a de Polignac number, because 27151493 - 2² = 27151489 is a prime.

It is equal to p_1691960 and since 27151493 and 1691960 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27151403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13575746 + 13575747.

It is an arithmetic number, because the mean of its divisors is an integer number (13575747).

Almost surely, 2^27151493 is an apocalyptic number.

It is an amenable number.

27151493 is a deficient number, since it is larger than the sum of its proper divisors (1).

27151493 is an equidigital number, since it uses as much as digits as its factorization.

27151493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 27151493 is about 5210.7094526561. The cubic root of 27151493 is about 300.5600390555.

The spelling of 27151493 in words is "twenty-seven million, one hundred fifty-one thousand, four hundred ninety-three".