55122322 has 4 divisors (see below), whose sum is σ = 82683486. Its totient is φ = 27561160.

The previous prime is 55122317. The next prime is 55122323. The reversal of 55122322 is 22322155.

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

It can be written as a sum of positive squares in only one way, i.e., 52403121 + 2719201 = 7239^2 + 1649^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55122293 and 55122302.

It is not an unprimeable number, because it can be changed into a prime (55122323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13780579 + ... + 13780582.

Almost surely, 2^55122322 is an apocalyptic number.

55122322 is a deficient number, since it is larger than the sum of its proper divisors (27561164).

55122322 is a wasteful number, since it uses less digits than its factorization.

55122322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27561163.

The product of its digits is 1200, while the sum is 22.

The square root of 55122322 is about 7424.4408543674. The cubic root of 55122322 is about 380.5769674784.

Adding to 55122322 its reverse (22322155), we get a palindrome (77444477).

The spelling of 55122322 in words is "fifty-five million, one hundred twenty-two thousand, three hundred twenty-two".