55130475400 has 384 divisors, whose sum is σ = 172788940800. Its totient is φ = 15798297600.

The previous prime is 55130475377. The next prime is 55130475427. The reversal of 55130475400 is 457403155.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 76676241 + ... + 76676959.

It is an arithmetic number, because the mean of its divisors is an integer number (449971200).

Almost surely, 2^55130475400 is an apocalyptic number.

55130475400 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 55130475400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86394470400).

55130475400 is an abundant number, since it is smaller than the sum of its proper divisors (117658465400).

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

55130475400 is a wasteful number, since it uses less digits than its factorization.

55130475400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 34.

Adding to 55130475400 its reverse (457403155), we get a palindrome (55587878555).

The spelling of 55130475400 in words is "fifty-five billion, one hundred thirty million, four hundred seventy-five thousand, four hundred".