55122623 has 4 divisors (see below), whose sum is σ = 55201080. Its totient is φ = 55044168.

The previous prime is 55122611. The next prime is 55122647. The reversal of 55122623 is 32622155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32622155 = 5 ⋅6524431.

It is a cyclic number.

It is not a de Polignac number, because 55122623 - 2⁴ = 55122607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55122592 and 55122601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55122323) 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, 38165 + ... + 39582.

It is an arithmetic number, because the mean of its divisors is an integer number (13800270).

Almost surely, 2^55122623 is an apocalyptic number.

55122623 is a deficient number, since it is larger than the sum of its proper divisors (78457).

55122623 is an equidigital number, since it uses as much as digits as its factorization.

55122623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78456.

The product of its digits is 3600, while the sum is 26.

The square root of 55122623 is about 7424.4611252265. The cubic root of 55122623 is about 380.5776602012.

Adding to 55122623 its reverse (32622155), we get a palindrome (87744778).

The spelling of 55122623 in words is "fifty-five million, one hundred twenty-two thousand, six hundred twenty-three".