55531022240 has 48 divisors (see below), whose sum is σ = 138909225672. Its totient is φ = 20905795584.

The previous prime is 55531022231. The next prime is 55531022293. The reversal of 55531022240 is 4222013555.

55531022240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 55524324496 + 6697744 = 235636^2 + 2588^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10205189 + ... + 10210628.

Almost surely, 2^55531022240 is an apocalyptic number.

It is an amenable number.

55531022240 is an abundant number, since it is smaller than the sum of its proper divisors (83378203432).

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

55531022240 is a wasteful number, since it uses less digits than its factorization.

55531022240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20415849 (or 20415841 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 55531022240 its reverse (4222013555), we get a palindrome (59753035795).

The spelling of 55531022240 in words is "fifty-five billion, five hundred thirty-one million, twenty-two thousand, two hundred forty".