54451140 has 48 divisors (see below), whose sum is σ = 155348928. Its totient is φ = 14245504.

The previous prime is 54451139. The next prime is 54451147. The reversal of 54451140 is 4115445.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 54451140.

It is not an unprimeable number, because it can be changed into a prime (54451147) 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, 5382 + ... + 11741.

It is an arithmetic number, because the mean of its divisors is an integer number (3236436).

Almost surely, 2^54451140 is an apocalyptic number.

It is an amenable number.

54451140 is an abundant number, since it is smaller than the sum of its proper divisors (100897788).

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

54451140 is a wasteful number, since it uses less digits than its factorization.

54451140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17188 (or 17186 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 54451140 is about 7379.1015713297. The cubic root of 54451140 is about 379.0259912604.

Adding to 54451140 its reverse (4115445), we get a palindrome (58566585).

The spelling of 54451140 in words is "fifty-four million, four hundred fifty-one thousand, one hundred forty".