55130544 has 200 divisors, whose sum is σ = 187249920. Its totient is φ = 15334272.

The previous prime is 55130539. The next prime is 55130557. The reversal of 55130544 is 44503155.

It is a super-3 number, since 3×55130544³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 535197 + ... + 535299.

Almost surely, 2^55130544 is an apocalyptic number.

55130544 is a gapful number since it is divisible by the number (54) 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 55130544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93624960).

55130544 is an abundant number, since it is smaller than the sum of its proper divisors (132119376).

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

55130544 is a wasteful number, since it uses less digits than its factorization.

55130544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 55130544 is about 7424.9945454525. The cubic root of 55130544 is about 380.5958887197.

Adding to 55130544 its reverse (44503155), we get a palindrome (99633699).

The spelling of 55130544 in words is "fifty-five million, one hundred thirty thousand, five hundred forty-four".