51713161 has 8 divisors (see below), whose sum is σ = 53290440. Its totient is φ = 50145408.

The previous prime is 51713159. The next prime is 51713171. The reversal of 51713161 is 16131715.

It can be written as a sum of positive squares in 4 ways, for example, as 447561 + 51265600 = 669^2 + 7160^2 .

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 51713161 - 2¹ = 51713159 is a prime.

It is a super-2 number, since 2×51713161² = 5348502041223842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51713141) 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, 9525 + ... + 13933.

It is an arithmetic number, because the mean of its divisors is an integer number (6661305).

Almost surely, 2^51713161 is an apocalyptic number.

It is an amenable number.

51713161 is a deficient number, since it is larger than the sum of its proper divisors (1577279).

51713161 is a wasteful number, since it uses less digits than its factorization.

51713161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4763.

The product of its digits is 630, while the sum is 25.

The square root of 51713161 is about 7191.1863416268. The cubic root of 51713161 is about 372.5635487573.

Adding to 51713161 its reverse (16131715), we get a palindrome (67844876).

The spelling of 51713161 in words is "fifty-one million, seven hundred thirteen thousand, one hundred sixty-one".