53231400 has 72 divisors (see below), whose sum is σ = 178774830. Its totient is φ = 14194560.

The previous prime is 53231383. The next prime is 53231441. The reversal of 53231400 is 413235.

53231400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 28965924 + 24265476 = 5382^2 + 4926^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12987 + ... + 16586.

Almost surely, 2^53231400 is an apocalyptic number.

53231400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

53231400 is an abundant number, since it is smaller than the sum of its proper divisors (125543430).

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

53231400 is a wasteful number, since it uses less digits than its factorization.

53231400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29595 (or 29583 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 53231400 is about 7295.9851973534. The cubic root of 53231400 is about 376.1744512647.

Adding to 53231400 its reverse (413235), we get a palindrome (53644635).

The spelling of 53231400 in words is "fifty-three million, two hundred thirty-one thousand, four hundred".