53443400 has 24 divisors (see below), whose sum is σ = 124256370. Its totient is φ = 21377280.

The previous prime is 53443391. The next prime is 53443457. The reversal of 53443400 is 434435.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 51294244 + 2149156 = 7162^2 + 1466^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133409 + ... + 133808.

Almost surely, 2^53443400 is an apocalyptic number.

53443400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53443400 is an abundant number, since it is smaller than the sum of its proper divisors (70812970).

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

53443400 is a wasteful number, since it uses less digits than its factorization.

53443400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267233 (or 267224 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 53443400 is about 7310.4992989535. The cubic root of 53443400 is about 376.6731753733.

Adding to 53443400 its reverse (434435), we get a palindrome (53877835).

It can be divided in two parts, 534 and 43400, that added together give a palindrome (43934).

The spelling of 53443400 in words is "fifty-three million, four hundred forty-three thousand, four hundred".