722145451 has 2 divisors, whose sum is σ = 722145452. Its totient is φ = 722145450.

The previous prime is 722145409. The next prime is 722145481. The reversal of 722145451 is 154541227.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 722145451 - 2¹³ = 722137259 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (722145481) 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, 361072725 + 361072726.

It is an arithmetic number, because the mean of its divisors is an integer number (361072726).

Almost surely, 2^722145451 is an apocalyptic number.

722145451 is a deficient number, since it is larger than the sum of its proper divisors (1).

722145451 is an equidigital number, since it uses as much as digits as its factorization.

722145451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11200, while the sum is 31.

The square root of 722145451 is about 26872.7641116429. The cubic root of 722145451 is about 897.1703104410.

Adding to 722145451 its reverse (154541227), we get a palindrome (876686678).

The spelling of 722145451 in words is "seven hundred twenty-two million, one hundred forty-five thousand, four hundred fifty-one".