55101043420 has 96 divisors (see below), whose sum is σ = 125707075200. Its totient is φ = 20224748544.

The previous prime is 55101043409. The next prime is 55101043429. The reversal of 55101043420 is 2434010155.

It is a happy number.

55101043420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55101043420² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55101043429) 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, 2081226 + ... + 2107534.

It is an arithmetic number, because the mean of its divisors is an integer number (1309448700).

Almost surely, 2^55101043420 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 55101043420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62853537600).

55101043420 is an abundant number, since it is smaller than the sum of its proper divisors (70606031780).

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

55101043420 is a wasteful number, since it uses less digits than its factorization.

55101043420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26527 (or 26525 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 55101043420 its reverse (2434010155), we get a palindrome (57535053575).

The spelling of 55101043420 in words is "fifty-five billion, one hundred one million, forty-three thousand, four hundred twenty".