53316432 has 120 divisors (see below), whose sum is σ = 169260000. Its totient is φ = 15531264.

The previous prime is 53316407. The next prime is 53316469. The reversal of 53316432 is 23461335.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 53316396 and 53316405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34819 + ... + 36317.

It is an arithmetic number, because the mean of its divisors is an integer number (1410500).

Almost surely, 2^53316432 is an apocalyptic number.

53316432 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53316432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84630000).

53316432 is an abundant number, since it is smaller than the sum of its proper divisors (115943568).

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

53316432 is a wasteful number, since it uses less digits than its factorization.

53316432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545 (or 1536 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 53316432 is about 7301.8101865222. The cubic root of 53316432 is about 376.3746454425.

Adding to 53316432 its reverse (23461335), we get a palindrome (76777767).

The spelling of 53316432 in words is "fifty-three million, three hundred sixteen thousand, four hundred thirty-two".