53504400 has 60 divisors (see below), whose sum is σ = 171396272. Its totient is φ = 14267520.

The previous prime is 53504329. The next prime is 53504411. The reversal of 53504400 is 440535.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (60).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21094 + ... + 23493.

Almost surely, 2^53504400 is an apocalyptic number.

53504400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53504400 is an abundant number, since it is smaller than the sum of its proper divisors (117891872).

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

53504400 is a wasteful number, since it uses less digits than its factorization.

53504400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44608 (or 44597 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 53504400 is about 7314.6701907878. The cubic root of 53504400 is about 376.8164317734.

Adding to 53504400 its reverse (440535), we get a palindrome (53944935).

The spelling of 53504400 in words is "fifty-three million, five hundred four thousand, four hundred".