54781488 has 80 divisors (see below), whose sum is σ = 158367840. Its totient is φ = 18130176.

The previous prime is 54781487. The next prime is 54781499. The reversal of 54781488 is 88418745.

It is a super-2 number, since 2×54781488² = 6002022854988288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54781481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74370 + ... + 75102.

It is an arithmetic number, because the mean of its divisors is an integer number (1979598).

Almost surely, 2^54781488 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 54781488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79183920).

54781488 is an abundant number, since it is smaller than the sum of its proper divisors (103586352).

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

54781488 is a wasteful number, since it uses less digits than its factorization.

54781488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 911 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 54781488 is about 7401.4517494881. The cubic root of 54781488 is about 379.7909468778.

The spelling of 54781488 in words is "fifty-four million, seven hundred eighty-one thousand, four hundred eighty-eight".