55432242400 has 36 divisors (see below), whose sum is σ = 135323963712. Its totient is φ = 22172896640.

The previous prime is 55432242361. The next prime is 55432242401. The reversal of 55432242400 is 424223455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55432242401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34644352 + ... + 34645951.

It is an arithmetic number, because the mean of its divisors is an integer number (3758998992).

Almost surely, 2^55432242400 is an apocalyptic number.

55432242400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55432242400 is an abundant number, since it is smaller than the sum of its proper divisors (79891721312).

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

55432242400 is a wasteful number, since it uses less digits than its factorization.

55432242400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69290323 (or 69290310 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 55432242400 its reverse (424223455), we get a palindrome (55856465855).

The spelling of 55432242400 in words is "fifty-five billion, four hundred thirty-two million, two hundred forty-two thousand, four hundred".