550520553400 has 96 divisors (see below), whose sum is σ = 1305628488000. Its totient is φ = 215832913920.

The previous prime is 550520553397. The next prime is 550520553481. The reversal of 550520553400 is 4355025055.

550520553400 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-3 number, since 3×550520553400³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2037436 + ... + 2291764.

It is an arithmetic number, because the mean of its divisors is an integer number (13600296750).

Almost surely, 2^550520553400 is an apocalyptic number.

550520553400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550520553400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652814244000).

550520553400 is an abundant number, since it is smaller than the sum of its proper divisors (755107934600).

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

550520553400 is a wasteful number, since it uses less digits than its factorization.

550520553400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254561 (or 254552 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 34.

Adding to 550520553400 its reverse (4355025055), we get a palindrome (554875578455).

The spelling of 550520553400 in words is "five hundred fifty billion, five hundred twenty million, five hundred fifty-three thousand, four hundred".