622430551 has 2 divisors, whose sum is σ = 622430552. Its totient is φ = 622430550.

The previous prime is 622430533. The next prime is 622430573. The reversal of 622430551 is 155034226.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 622430551 - 2¹⁷ = 622299479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622430521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311215275 + 311215276.

It is an arithmetic number, because the mean of its divisors is an integer number (311215276).

Almost surely, 2^622430551 is an apocalyptic number.

622430551 is a deficient number, since it is larger than the sum of its proper divisors (1).

622430551 is an equidigital number, since it uses as much as digits as its factorization.

622430551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 622430551 is about 24948.5580946074. The cubic root of 622430551 is about 853.8147117978.

Adding to 622430551 its reverse (155034226), we get a palindrome (777464777).

The spelling of 622430551 in words is "six hundred twenty-two million, four hundred thirty thousand, five hundred fifty-one".