55148688 has 100 divisors (see below), whose sum is σ = 182448640. Its totient is φ = 15754176.

The previous prime is 55148683. The next prime is 55148693. The reversal of 55148688 is 88684155.

It is an interprime number because it is at equal distance from previous prime (55148683) and next prime (55148693).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55148683) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6033 + ... + 12111.

Almost surely, 2^55148688 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 55148688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91224320).

55148688 is an abundant number, since it is smaller than the sum of its proper divisors (127299952).

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

55148688 is a wasteful number, since it uses less digits than its factorization.

55148688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6106 (or 6091 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The square root of 55148688 is about 7426.2162640203. The cubic root of 55148688 is about 380.6376367471.

The spelling of 55148688 in words is "fifty-five million, one hundred forty-eight thousand, six hundred eighty-eight".