52381019161 has 3 divisors (see below), whose sum is σ = 52381248031. Its totient is φ = 52380790292.

The previous prime is 52381019149. The next prime is 52381019167. The reversal of 52381019161 is 16191018325.

The square root of 52381019161 is 228869.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 13358967561 + 39022051600 = 115581^2 + 197540^2 .

It is not a de Polignac number, because 52381019161 - 2¹¹ = 52381017113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52381019161.

It is not an unprimeable number, because it can be changed into a prime (52381019167) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 114435 + ... + 343303.

Almost surely, 2^52381019161 is an apocalyptic number.

52381019161 is the 228869-th square number.

52381019161 is the 114435-th centered octagonal number.

It is an amenable number.

52381019161 is a deficient number, since it is larger than the sum of its proper divisors (228870).

52381019161 is an frugal number, since it uses more digits than its factorization.

52381019161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457738 (or 228869 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 52381019161 in words is "fifty-two billion, three hundred eighty-one million, nineteen thousand, one hundred sixty-one".