51002057161 has 8 divisors (see below), whose sum is σ = 55790216064. Its totient is φ = 46239166320.

The previous prime is 51002057137. The next prime is 51002057177. The reversal of 51002057161 is 16175020015.

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 51002057161 - 2¹⁵ = 51002024393 is a prime.

It is a super-2 number, since 2×51002057161² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51002057131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6312790 + ... + 6320863.

It is an arithmetic number, because the mean of its divisors is an integer number (6973777008).

Almost surely, 2^51002057161 is an apocalyptic number.

It is an amenable number.

51002057161 is a deficient number, since it is larger than the sum of its proper divisors (4788158903).

51002057161 is a wasteful number, since it uses less digits than its factorization.

51002057161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12634031.

The product of its (nonzero) digits is 2100, while the sum is 28.

Adding to 51002057161 its reverse (16175020015), we get a palindrome (67177077176).

The spelling of 51002057161 in words is "fifty-one billion, two million, fifty-seven thousand, one hundred sixty-one".