55510450420 has 24 divisors (see below), whose sum is σ = 117726127848. Its totient is φ = 21984336000.

The previous prime is 55510450409. The next prime is 55510450439. The reversal of 55510450420 is 2405401555.

55510450420 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 19735754256 + 35774696164 = 140484^2 + 189142^2 .

It is a congruent number.

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, 13738191 + ... + 13742230.

It is an arithmetic number, because the mean of its divisors is an integer number (4905255327).

Almost surely, 2^55510450420 is an apocalyptic number.

It is an amenable number.

55510450420 is an abundant number, since it is smaller than the sum of its proper divisors (62215677428).

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

55510450420 is a wasteful number, since it uses less digits than its factorization.

55510450420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27480531 (or 27480529 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

Adding to 55510450420 its reverse (2405401555), we get a palindrome (57915851975).

The spelling of 55510450420 in words is "fifty-five billion, five hundred ten million, four hundred fifty thousand, four hundred twenty".