55081488 has 120 divisors (see below), whose sum is σ = 180658080. Its totient is φ = 14300160.

The previous prime is 55081487. The next prime is 55081489. The reversal of 55081488 is 88418055.

It is an interprime number because it is at equal distance from previous prime (55081487) and next prime (55081489).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55081483) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24808 + ... + 26936.

It is an arithmetic number, because the mean of its divisors is an integer number (1505484).

Almost surely, 2^55081488 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 55081488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90329040).

55081488 is an abundant number, since it is smaller than the sum of its proper divisors (125576592).

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

55081488 is a wasteful number, since it uses less digits than its factorization.

55081488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165 (or 2152 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 39.

The square root of 55081488 is about 7421.6903734931. The cubic root of 55081488 is about 380.4829685423.

It can be divided in two parts, 5508 and 1488, that added together give a palindrome (6996).

The spelling of 55081488 in words is "fifty-five million, eighty-one thousand, four hundred eighty-eight".