55403120322 has 24 divisors (see below), whose sum is σ = 130952830320. Its totient is φ = 16788824280.

The previous prime is 55403120317. The next prime is 55403120351. The reversal of 55403120322 is 22302130455.

It is a happy number.

55403120322 is a `hidden beast` number, since 55 + 403 + 1 + 203 + 2 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139906672 + ... + 139907067.

It is an arithmetic number, because the mean of its divisors is an integer number (5456367930).

Almost surely, 2^55403120322 is an apocalyptic number.

55403120322 is an abundant number, since it is smaller than the sum of its proper divisors (75549709998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55403120322 is a wasteful number, since it uses less digits than its factorization.

55403120322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279813758 (or 279813755 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 55403120322 its reverse (22302130455), we get a palindrome (77705250777).

The spelling of 55403120322 in words is "fifty-five billion, four hundred three million, one hundred twenty thousand, three hundred twenty-two".