53904040 has 64 divisors (see below), whose sum is σ = 129600000. Its totient is φ = 20133120.

The previous prime is 53904029. The next prime is 53904043. The reversal of 53904040 is 4040935.

It is a junction number, because it is equal to n+sod(n) for n = 53903996 and 53904014.

It is not an unprimeable number, because it can be changed into a prime (53904043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35211 + ... + 36709.

It is an arithmetic number, because the mean of its divisors is an integer number (2025000).

Almost surely, 2^53904040 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 53904040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64800000).

53904040 is an abundant number, since it is smaller than the sum of its proper divisors (75695960).

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

53904040 is a wasteful number, since it uses less digits than its factorization.

53904040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 53904040 is about 7341.9370740970. The cubic root of 53904040 is about 377.7522895786.

Adding to 53904040 its reverse (4040935), we get a palindrome (57944975).

The spelling of 53904040 in words is "fifty-three million, nine hundred four thousand, forty".