53416321 has 6 divisors (see below), whose sum is σ = 62137410. Its totient is φ = 45785376.

The previous prime is 53416309. The next prime is 53416331. The reversal of 53416321 is 12361435.

It can be written as a sum of positive squares in only one way, i.e., 50979600 + 2436721 = 7140^2 + 1561^2 .

It is a de Polignac number, because none of the positive numbers 2^k-53416321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53416301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 545016 + ... + 545113.

It is an arithmetic number, because the mean of its divisors is an integer number (10356235).

Almost surely, 2^53416321 is an apocalyptic number.

It is an amenable number.

53416321 is a deficient number, since it is larger than the sum of its proper divisors (8721089).

53416321 is a wasteful number, since it uses less digits than its factorization.

53416321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090143 (or 1090136 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 53416321 is about 7308.6470020107. The cubic root of 53416321 is about 376.6095463370.

Adding to 53416321 its reverse (12361435), we get a palindrome (65777756).

The spelling of 53416321 in words is "fifty-three million, four hundred sixteen thousand, three hundred twenty-one".