55137528 has 96 divisors (see below), whose sum is σ = 159971760. Its totient is φ = 17095680.

The previous prime is 55137517. The next prime is 55137553. The reversal of 55137528 is 82573155.

55137528 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 (36).

It is a junction number, because it is equal to n+sod(n) for n = 55137492 and 55137501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130758 + ... + 131178.

Almost surely, 2^55137528 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55137528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79985880).

55137528 is an abundant number, since it is smaller than the sum of its proper divisors (104834232).

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

55137528 is a wasteful number, since it uses less digits than its factorization.

55137528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 550 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 55137528 is about 7425.4648339346. The cubic root of 55137528 is about 380.6119594811.

It can be divided in two parts, 5513 and 7528, that added together give a triangular number (13041 = T₁₆₁).

The spelling of 55137528 in words is "fifty-five million, one hundred thirty-seven thousand, five hundred twenty-eight".