55021322332 has 24 divisors (see below), whose sum is σ = 97113350880. Its totient is φ = 27275499840.

The previous prime is 55021322309. The next prime is 55021322339. The reversal of 55021322332 is 23322312055.

It is a happy number.

It is a super-2 number, since 2×55021322332² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55021322332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55021322339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153982 + ... + 365722.

It is an arithmetic number, because the mean of its divisors is an integer number (4046389620).

Almost surely, 2^55021322332 is an apocalyptic number.

It is an amenable number.

55021322332 is a deficient number, since it is larger than the sum of its proper divisors (42092028548).

55021322332 is a wasteful number, since it uses less digits than its factorization.

55021322332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212301 (or 212299 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 55021322332 its reverse (23322312055), we get a palindrome (78343634387).

The spelling of 55021322332 in words is "fifty-five billion, twenty-one million, three hundred twenty-two thousand, three hundred thirty-two".