53052321 has 8 divisors (see below), whose sum is σ = 80841664. Its totient is φ = 30315600.

The previous prime is 53052299. The next prime is 53052347. The reversal of 53052321 is 12325035.

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

It is not a de Polignac number, because 53052321 - 2⁵ = 53052289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2526301 = 53052321 / (5 + 3 + 0 + 5 + 2 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53051321) 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 7 ways as a sum of consecutive naturals, for example, 1263130 + ... + 1263171.

It is an arithmetic number, because the mean of its divisors is an integer number (10105208).

Almost surely, 2^53052321 is an apocalyptic number.

It is an amenable number.

53052321 is a deficient number, since it is larger than the sum of its proper divisors (27789343).

53052321 is a wasteful number, since it uses less digits than its factorization.

53052321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526311.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 53052321 is about 7283.7024239050. The cubic root of 53052321 is about 375.7521401962.

Adding to 53052321 its reverse (12325035), we get a palindrome (65377356).

It can be divided in two parts, 5305 and 2321, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 53052321 in words is "fifty-three million, fifty-two thousand, three hundred twenty-one".