5171567261 has 6 divisors (see below), whose sum is σ = 6015904830. Its totient is φ = 4432771896.

The previous prime is 5171567249. The next prime is 5171567279. The reversal of 5171567261 is 1627651715.

It can be written as a sum of positive squares in only one way, i.e., 3659524036 + 1512043225 = 60494^2 + 38885^2 .

It is not a de Polignac number, because 5171567261 - 2⁶ = 5171567197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5171567201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52771046 + ... + 52771143.

It is an arithmetic number, because the mean of its divisors is an integer number (1002650805).

Almost surely, 2^5171567261 is an apocalyptic number.

It is an amenable number.

5171567261 is a deficient number, since it is larger than the sum of its proper divisors (844337569).

5171567261 is a wasteful number, since it uses less digits than its factorization.

5171567261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105542203 (or 105542196 counting only the distinct ones).

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

The square root of 5171567261 is about 71913.6097063692. The cubic root of 5171567261 is about 1729.3148033285.

The spelling of 5171567261 in words is "five billion, one hundred seventy-one million, five hundred sixty-seven thousand, two hundred sixty-one".