622040453 has 4 divisors (see below), whose sum is σ = 622090380. Its totient is φ = 621990528.

The previous prime is 622040399. The next prime is 622040501. The reversal of 622040453 is 354040226.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 354040226 = 2 ⋅177020113.

It can be written as a sum of positive squares in 2 ways, for example, as 229128769 + 392911684 = 15137^2 + 19822^2 .

It is a cyclic number.

It is not a de Polignac number, because 622040453 - 2¹⁸ = 621778309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622042453) 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 in 3 ways as a sum of consecutive naturals, for example, 10901 + ... + 36917.

It is an arithmetic number, because the mean of its divisors is an integer number (155522595).

Almost surely, 2^622040453 is an apocalyptic number.

It is an amenable number.

622040453 is a deficient number, since it is larger than the sum of its proper divisors (49927).

622040453 is a wasteful number, since it uses less digits than its factorization.

622040453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49926.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 622040453 is about 24940.7388222562. The cubic root of 622040453 is about 853.6363031290.

Adding to 622040453 its reverse (354040226), we get a palindrome (976080679).

The spelling of 622040453 in words is "six hundred twenty-two million, forty thousand, four hundred fifty-three".