5271128261 has 8 divisors (see below), whose sum is σ = 6048149184. Its totient is φ = 4500108000.

The previous prime is 5271128251. The next prime is 5271128281. The reversal of 5271128261 is 1628211725.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5271128261 - 2²² = 5266933957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5271128251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498280 + ... + 1501793.

It is an arithmetic number, because the mean of its divisors is an integer number (756018648).

Almost surely, 2^5271128261 is an apocalyptic number.

It is an amenable number.

5271128261 is a deficient number, since it is larger than the sum of its proper divisors (777020923).

5271128261 is a wasteful number, since it uses less digits than its factorization.

5271128261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000331.

The product of its digits is 13440, while the sum is 35.

The square root of 5271128261 is about 72602.5361884831. The cubic root of 5271128261 is about 1740.3417064623.

Adding to 5271128261 its reverse (1628211725), we get a palindrome (6899339986).

The spelling of 5271128261 in words is "five billion, two hundred seventy-one million, one hundred twenty-eight thousand, two hundred sixty-one".