55161622 has 4 divisors (see below), whose sum is σ = 82742436. Its totient is φ = 27580810.

The previous prime is 55161619. The next prime is 55161641. The reversal of 55161622 is 22616155.

55161622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22616155 = 5 ⋅4523231.

It is a congruent number.

It is an unprimeable number.

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, 13790404 + ... + 13790407.

It is an arithmetic number, because the mean of its divisors is an integer number (20685609).

Almost surely, 2^55161622 is an apocalyptic number.

55161622 is a deficient number, since it is larger than the sum of its proper divisors (27580814).

55161622 is a wasteful number, since it uses less digits than its factorization.

55161622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27580813.

The product of its digits is 3600, while the sum is 28.

The square root of 55161622 is about 7427.0870467499. The cubic root of 55161622 is about 380.6673913526.

Adding to 55161622 its reverse (22616155), we get a palindrome (77777777).

The spelling of 55161622 in words is "fifty-five million, one hundred sixty-one thousand, six hundred twenty-two".