73223551 has 2 divisors, whose sum is σ = 73223552. Its totient is φ = 73223550.

The previous prime is 73223537. The next prime is 73223561. The reversal of 73223551 is 15532237.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73223551 - 2¹⁷ = 73092479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73223531) 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, 36611775 + 36611776.

It is an arithmetic number, because the mean of its divisors is an integer number (36611776).

Almost surely, 2^73223551 is an apocalyptic number.

73223551 is a deficient number, since it is larger than the sum of its proper divisors (1).

73223551 is an equidigital number, since it uses as much as digits as its factorization.

73223551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 28.

The square root of 73223551 is about 8557.0760777266. The cubic root of 73223551 is about 418.3601038231.

Adding to 73223551 its reverse (15532237), we get a palindrome (88755788).

The spelling of 73223551 in words is "seventy-three million, two hundred twenty-three thousand, five hundred fifty-one".