51589161 has 48 divisors (see below), whose sum is σ = 88233600. Its totient is φ = 28740096.

The previous prime is 51589157. The next prime is 51589217. The reversal of 51589161 is 16198515.

51589161 is a `hidden beast` number, since 515 + 89 + 1 + 61 = 666.

It is not a de Polignac number, because 51589161 - 2² = 51589157 is a prime.

It is a super-2 number, since 2×51589161² = 5322883065367842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51589141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50625 + ... + 51633.

It is an arithmetic number, because the mean of its divisors is an integer number (1838200).

Almost surely, 2^51589161 is an apocalyptic number.

It is an amenable number.

51589161 is a deficient number, since it is larger than the sum of its proper divisors (36644439).

51589161 is a wasteful number, since it uses less digits than its factorization.

51589161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070 (or 1067 counting only the distinct ones).

The product of its digits is 10800, while the sum is 36.

The square root of 51589161 is about 7182.5595020160. The cubic root of 51589161 is about 372.2655275606.

It can be divided in two parts, 515 and 89161, that added together give a triangular number (89676 = T₄₂₃).

The spelling of 51589161 in words is "fifty-one million, five hundred eighty-nine thousand, one hundred sixty-one".