53404321 has 8 divisors (see below), whose sum is σ = 56098944. Its totient is φ = 50740800.

The previous prime is 53404303. The next prime is 53404339. The reversal of 53404321 is 12340435.

53404321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (53404303) and next prime (53404339).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53404321 - 2¹³ = 53396129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53404292 and 53404301.

It is not an unprimeable number, because it can be changed into a prime (53404121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4216 + ... + 11161.

It is an arithmetic number, because the mean of its divisors is an integer number (7012368).

Almost surely, 2^53404321 is an apocalyptic number.

It is an amenable number.

53404321 is a deficient number, since it is larger than the sum of its proper divisors (2694623).

53404321 is a wasteful number, since it uses less digits than its factorization.

53404321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15551.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 53404321 is about 7307.8260105178. The cubic root of 53404321 is about 376.5813423915.

Adding to 53404321 its reverse (12340435), we get a palindrome (65744756).

The spelling of 53404321 in words is "fifty-three million, four hundred four thousand, three hundred twenty-one".