273541421 has 2 divisors, whose sum is σ = 273541422. Its totient is φ = 273541420.

The previous prime is 273541399. The next prime is 273541459. The reversal of 273541421 is 124145372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192793225 + 80748196 = 13885^2 + 8986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-273541421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (273541621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136770710 + 136770711.

It is an arithmetic number, because the mean of its divisors is an integer number (136770711).

Almost surely, 2^273541421 is an apocalyptic number.

It is an amenable number.

273541421 is a deficient number, since it is larger than the sum of its proper divisors (1).

273541421 is an equidigital number, since it uses as much as digits as its factorization.

273541421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 29.

The square root of 273541421 is about 16539.0876713318. The cubic root of 273541421 is about 649.1439784775.

Adding to 273541421 its reverse (124145372), we get a palindrome (397686793).

The spelling of 273541421 in words is "two hundred seventy-three million, five hundred forty-one thousand, four hundred twenty-one".