274138547 has 2 divisors, whose sum is σ = 274138548. Its totient is φ = 274138546.

The previous prime is 274138531. The next prime is 274138561. The reversal of 274138547 is 745831472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 274138547 - 2⁴ = 274138531 is a prime.

It is a super-3 number, since 3×274138547³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (274138577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137069273 + 137069274.

It is an arithmetic number, because the mean of its divisors is an integer number (137069274).

Almost surely, 2^274138547 is an apocalyptic number.

274138547 is a deficient number, since it is larger than the sum of its proper divisors (1).

274138547 is an equidigital number, since it uses as much as digits as its factorization.

274138547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 41.

The square root of 274138547 is about 16557.1297935361. The cubic root of 274138547 is about 649.6159838211.

The spelling of 274138547 in words is "two hundred seventy-four million, one hundred thirty-eight thousand, five hundred forty-seven".