53431532 has 48 divisors (see below), whose sum is σ = 117180672. Its totient is φ = 20710080.

The previous prime is 53431531. The next prime is 53431597. The reversal of 53431532 is 23513435.

It is a super-2 number, since 2×53431532² = 5709857223734048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53431531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86858 + ... + 87470.

It is an arithmetic number, because the mean of its divisors is an integer number (2441264).

Almost surely, 2^53431532 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 53431532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58590336).

53431532 is an abundant number, since it is smaller than the sum of its proper divisors (63749140).

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

53431532 is a wasteful number, since it uses less digits than its factorization.

53431532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 916 counting only the distinct ones).

The product of its digits is 5400, while the sum is 26.

The square root of 53431532 is about 7309.6875446219. The cubic root of 53431532 is about 376.6452911182.

Adding to 53431532 its reverse (23513435), we get a palindrome (76944967).

The spelling of 53431532 in words is "fifty-three million, four hundred thirty-one thousand, five hundred thirty-two".