5378195521 has 2 divisors, whose sum is σ = 5378195522. Its totient is φ = 5378195520.

The previous prime is 5378195519. The next prime is 5378195527. The reversal of 5378195521 is 1255918735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3348242496 + 2029953025 = 57864^2 + 45055^2 .

It is a cyclic number.

It is not a de Polignac number, because 5378195521 - 2¹ = 5378195519 is a prime.

It is a super-2 number, since 2×5378195521² = 57849974124208922882, which contains 22 as substring.

Together with 5378195519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5378195527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2689097760 + 2689097761.

It is an arithmetic number, because the mean of its divisors is an integer number (2689097761).

Almost surely, 2^5378195521 is an apocalyptic number.

It is an amenable number.

5378195521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5378195521 is an equidigital number, since it uses as much as digits as its factorization.

5378195521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 46.

The square root of 5378195521 is about 73336.1815272652. The cubic root of 5378195521 is about 1752.0460988518.

The spelling of 5378195521 in words is "five billion, three hundred seventy-eight million, one hundred ninety-five thousand, five hundred twenty-one".