55400442032 has 20 divisors (see below), whose sum is σ = 115595153520. Its totient is φ = 25569434688.

The previous prime is 55400442029. The next prime is 55400442043. The reversal of 55400442032 is 23024400455.

55400442032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55400441986 and 55400442004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133173932 + ... + 133174347.

It is an arithmetic number, because the mean of its divisors is an integer number (5779757676).

Almost surely, 2^55400442032 is an apocalyptic number.

55400442032 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

55400442032 is an abundant number, since it is smaller than the sum of its proper divisors (60194711488).

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

55400442032 is a wasteful number, since it uses less digits than its factorization.

55400442032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266348300 (or 266348294 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

Adding to 55400442032 its reverse (23024400455), we get a palindrome (78424842487).

The spelling of 55400442032 in words is "fifty-five billion, four hundred million, four hundred forty-two thousand, thirty-two".