5331781571 has 4 divisors (see below), whose sum is σ = 5332479672. Its totient is φ = 5331083472.

The previous prime is 5331781537. The next prime is 5331781579. The reversal of 5331781571 is 1751871335.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5331781571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5331781579) 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, 337466 + ... + 352911.

It is an arithmetic number, because the mean of its divisors is an integer number (1333119918).

Almost surely, 2^5331781571 is an apocalyptic number.

5331781571 is a deficient number, since it is larger than the sum of its proper divisors (698101).

5331781571 is an equidigital number, since it uses as much as digits as its factorization.

5331781571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698100.

The product of its digits is 88200, while the sum is 41.

The square root of 5331781571 is about 73019.0493706950. The cubic root of 5331781571 is about 1746.9914643784.

The spelling of 5331781571 in words is "five billion, three hundred thirty-one million, seven hundred eighty-one thousand, five hundred seventy-one".