622553 has 4 divisors (see below), whose sum is σ = 624180. Its totient is φ = 620928.

The previous prime is 622549. The next prime is 622561. The reversal of 622553 is 355226.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85264 + 537289 = 292^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 622553 - 2² = 622549 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 622553.

It is not an unprimeable number, because it can be changed into a prime (622513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113 + ... + 1121.

It is an arithmetic number, because the mean of its divisors is an integer number (156045).

2⁶²²⁵⁵³ is an apocalyptic number.

It is an amenable number.

622553 is a deficient number, since it is larger than the sum of its proper divisors (1627).

622553 is a wasteful number, since it uses less digits than its factorization.

622553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626.

The product of its digits is 1800, while the sum is 23.

The square root of 622553 is about 789.0202785734. The cubic root of 622553 is about 85.3870697644.

Adding to 622553 its reverse (355226), we get a palindrome (977779).

The spelling of 622553 in words is "six hundred twenty-two thousand, five hundred fifty-three".