53045321 has 32 divisors (see below), whose sum is σ = 69984000. Its totient is φ = 39094272.

The previous prime is 53045249. The next prime is 53045327. The reversal of 53045321 is 12354035.

It is a de Polignac number, because none of the positive numbers 2^k-53045321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53045327) 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 31 ways as a sum of consecutive naturals, for example, 65165 + ... + 65973.

It is an arithmetic number, because the mean of its divisors is an integer number (2187000).

Almost surely, 2^53045321 is an apocalyptic number.

It is an amenable number.

53045321 is a deficient number, since it is larger than the sum of its proper divisors (16938679).

53045321 is a wasteful number, since it uses less digits than its factorization.

53045321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53045321 is about 7283.2218832053. The cubic root of 53045321 is about 375.7356132367.

Adding to 53045321 its reverse (12354035), we get a palindrome (65399356).

The spelling of 53045321 in words is "fifty-three million, forty-five thousand, three hundred twenty-one".