55422103542520 has 384 divisors, whose sum is σ = 150463245038400. Its totient is φ = 18206183424000.

The previous prime is 55422103542479. The next prime is 55422103542529. The reversal of 55422103542520 is 2524530122455.

It is a super-2 number, since 2×55422103542520² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55422103542529) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1580355546 + ... + 1580390614.

Almost surely, 2^{55422103542520} 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 55422103542520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75231622519200).

55422103542520 is an abundant number, since it is smaller than the sum of its proper divisors (95041141495880).

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

55422103542520 is a wasteful number, since it uses less digits than its factorization.

55422103542520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35571 (or 35554 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

Adding to 55422103542520 its reverse (2524530122455), we get a palindrome (57946633664975).

The spelling of 55422103542520 in words is "fifty-five trillion, four hundred twenty-two billion, one hundred three million, five hundred forty-two thousand, five hundred twenty".