53405400 has 48 divisors (see below), whose sum is σ = 165558600. Its totient is φ = 14241280.

The previous prime is 53405399. The next prime is 53405459. The reversal of 53405400 is 450435.

It is a happy number.

It is a congruent number.

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, 43905 + ... + 45104.

Almost surely, 2^53405400 is an apocalyptic number.

53405400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53405400 is an abundant number, since it is smaller than the sum of its proper divisors (112153200).

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

53405400 is a wasteful number, since it uses less digits than its factorization.

53405400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89028 (or 89019 counting only the distinct ones).

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

The square root of 53405400 is about 7307.8998351099. The cubic root of 53405400 is about 376.5838785691.

Adding to 53405400 its reverse (450435), we get a palindrome (53855835).

The spelling of 53405400 in words is "fifty-three million, four hundred five thousand, four hundred".