54016640 has 32 divisors (see below), whose sum is σ = 129135060. Its totient is φ = 21606400.

The previous prime is 54016637. The next prime is 54016661. The reversal of 54016640 is 4661045.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 47004736 + 7011904 = 6856^2 + 2648^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41561 + ... + 42840.

Almost surely, 2^54016640 is an apocalyptic number.

It is an amenable number.

54016640 is an abundant number, since it is smaller than the sum of its proper divisors (75118420).

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

54016640 is an equidigital number, since it uses as much as digits as its factorization.

54016640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84420 (or 84408 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 54016640 is about 7349.6013497332. The cubic root of 54016640 is about 378.0151352151.

Adding to 54016640 its reverse (4661045), we get a palindrome (58677685).

The spelling of 54016640 in words is "fifty-four million, sixteen thousand, six hundred forty".