53216332 has 12 divisors (see below), whose sum is σ = 100292416. Its totient is φ = 24561360.

The previous prime is 53216329. The next prime is 53216347. The reversal of 53216332 is 23361235.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 53216297 and 53216306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511644 + ... + 511747.

Almost surely, 2^53216332 is an apocalyptic number.

53216332 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

53216332 is a deficient number, since it is larger than the sum of its proper divisors (47076084).

53216332 is a wasteful number, since it uses less digits than its factorization.

53216332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023408 (or 1023406 counting only the distinct ones).

The product of its digits is 3240, while the sum is 25.

The square root of 53216332 is about 7294.9525015589. The cubic root of 53216332 is about 376.1389538481.

Adding to 53216332 its reverse (23361235), we get a palindrome (76577567).

The spelling of 53216332 in words is "fifty-three million, two hundred sixteen thousand, three hundred thirty-two".