272321407 has 2 divisors, whose sum is σ = 272321408. Its totient is φ = 272321406.

The previous prime is 272321383. The next prime is 272321429. The reversal of 272321407 is 704123272.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-272321407 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 (272321447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136160703 + 136160704.

It is an arithmetic number, because the mean of its divisors is an integer number (136160704).

Almost surely, 2^272321407 is an apocalyptic number.

272321407 is a deficient number, since it is larger than the sum of its proper divisors (1).

272321407 is an equidigital number, since it uses as much as digits as its factorization.

272321407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 272321407 is about 16502.1637066174. The cubic root of 272321407 is about 648.1774641910.

Adding to 272321407 its reverse (704123272), we get a palindrome (976444679).

The spelling of 272321407 in words is "two hundred seventy-two million, three hundred twenty-one thousand, four hundred seven".