273405401 has 2 divisors, whose sum is σ = 273405402. Its totient is φ = 273405400.

The previous prime is 273405397. The next prime is 273405427. The reversal of 273405401 is 104504372.

It is an a-pointer prime, because the next prime (273405427) can be obtained adding 273405401 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 264908176 + 8497225 = 16276^2 + 2915^2 .

It is a cyclic number.

It is not a de Polignac number, because 273405401 - 2² = 273405397 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (273405701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136702700 + 136702701.

It is an arithmetic number, because the mean of its divisors is an integer number (136702701).

Almost surely, 2^273405401 is an apocalyptic number.

It is an amenable number.

273405401 is a deficient number, since it is larger than the sum of its proper divisors (1).

273405401 is an equidigital number, since it uses as much as digits as its factorization.

273405401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 273405401 is about 16534.9750831382. The cubic root of 273405401 is about 649.0363638147.

Adding to 273405401 its reverse (104504372), we get a palindrome (377909773).

The spelling of 273405401 in words is "two hundred seventy-three million, four hundred five thousand, four hundred one".