55431031044 has 96 divisors (see below), whose sum is σ = 136814146560. Its totient is φ = 17432857728.

The previous prime is 55431031043. The next prime is 55431031049. The reversal of 55431031044 is 44013013455.

55431031044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55431031043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6018547 + ... + 6027749.

It is an arithmetic number, because the mean of its divisors is an integer number (1425147360).

Almost surely, 2^55431031044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55431031044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68407073280).

55431031044 is an abundant number, since it is smaller than the sum of its proper divisors (81383115516).

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

55431031044 is a wasteful number, since it uses less digits than its factorization.

55431031044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9529 (or 9527 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 55431031044 its reverse (44013013455), we get a palindrome (99444044499).

The spelling of 55431031044 in words is "fifty-five billion, four hundred thirty-one million, thirty-one thousand, forty-four".