55506221221542 has 64 divisors (see below), whose sum is σ = 142571163571200. Its totient is φ = 14002524987264.

The previous prime is 55506221221501. The next prime is 55506221221573. The reversal of 55506221221542 is 24512212260555.

55506221221542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 55506221221494 and 55506221221503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2209981917 + ... + 2210007032.

It is an arithmetic number, because the mean of its divisors is an integer number (2227674430800).

Almost surely, 2^{55506221221542} is an apocalyptic number.

55506221221542 is an abundant number, since it is smaller than the sum of its proper divisors (87064942349658).

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

55506221221542 is a wasteful number, since it uses less digits than its factorization.

55506221221542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419988997.

The product of its (nonzero) digits is 480000, while the sum is 42.

The spelling of 55506221221542 in words is "fifty-five trillion, five hundred six billion, two hundred twenty-one million, two hundred twenty-one thousand, five hundred forty-two".