53360161321 has 4 divisors (see below), whose sum is σ = 53832375252. Its totient is φ = 52887947392.

The previous prime is 53360161313. The next prime is 53360161331. The reversal of 53360161321 is 12316106335.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3550848921 + 49809312400 = 59589^2 + 223180^2 .

It is a cyclic number.

It is not a de Polignac number, because 53360161321 - 2³ = 53360161313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53360161331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236106796 + ... + 236107021.

It is an arithmetic number, because the mean of its divisors is an integer number (13458093813).

Almost surely, 2^53360161321 is an apocalyptic number.

It is an amenable number.

53360161321 is a deficient number, since it is larger than the sum of its proper divisors (472213931).

53360161321 is a wasteful number, since it uses less digits than its factorization.

53360161321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472213930.

The product of its (nonzero) digits is 9720, while the sum is 31.

Adding to 53360161321 its reverse (12316106335), we get a palindrome (65676267656).

The spelling of 53360161321 in words is "fifty-three billion, three hundred sixty million, one hundred sixty-one thousand, three hundred twenty-one".