5377881521 has 2 divisors, whose sum is σ = 5377881522. Its totient is φ = 5377881520.

The previous prime is 5377881493. The next prime is 5377881529. The reversal of 5377881521 is 1251887735.

It is a happy number.

5377881521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4232803600 + 1145077921 = 65060^2 + 33839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5377881521 is a prime.

It is not a weakly prime, because it can be changed into another prime (5377881529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2688940760 + 2688940761.

It is an arithmetic number, because the mean of its divisors is an integer number (2688940761).

Almost surely, 2^5377881521 is an apocalyptic number.

It is an amenable number.

5377881521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5377881521 is an equidigital number, since it uses as much as digits as its factorization.

5377881521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 47.

The square root of 5377881521 is about 73334.0406700735. The cubic root of 5377881521 is about 1752.0120010967.

The spelling of 5377881521 in words is "five billion, three hundred seventy-seven million, eight hundred eighty-one thousand, five hundred twenty-one".