55522043240 has 128 divisors (see below), whose sum is σ = 132901171200. Its totient is φ = 20832303360.

The previous prime is 55522043233. The next prime is 55522043249. The reversal of 55522043240 is 4234022555.

It is a junction number, because it is equal to n+sod(n) for n = 55522043197 and 55522043206.

It is not an unprimeable number, because it can be changed into a prime (55522043249) 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, 10611425 + ... + 10616655.

It is an arithmetic number, because the mean of its divisors is an integer number (1038290400).

Almost surely, 2^55522043240 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 55522043240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66450585600).

55522043240 is an abundant number, since it is smaller than the sum of its proper divisors (77379127960).

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

55522043240 is a wasteful number, since it uses less digits than its factorization.

55522043240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5487 (or 5483 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 32.

Adding to 55522043240 its reverse (4234022555), we get a palindrome (59756065795).

The spelling of 55522043240 in words is "fifty-five billion, five hundred twenty-two million, forty-three thousand, two hundred forty".