51589571461 has 4 divisors (see below), whose sum is σ = 51773164524. Its totient is φ = 51405978400.

The previous prime is 51589571437. The next prime is 51589571477. The reversal of 51589571461 is 16417598515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16417598515 = 5 ⋅3283519703.

It can be written as a sum of positive squares in 2 ways, for example, as 27169258561 + 24420312900 = 164831^2 + 156270^2 .

It is a cyclic number.

It is not a de Polignac number, because 51589571461 - 2²³ = 51581182853 is a prime.

It is a super-2 number, since 2×51589571461² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51589571399 and 51589571408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51589571161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91796110 + ... + 91796671.

It is an arithmetic number, because the mean of its divisors is an integer number (12943291131).

Almost surely, 2^51589571461 is an apocalyptic number.

It is an amenable number.

51589571461 is a deficient number, since it is larger than the sum of its proper divisors (183593063).

51589571461 is a wasteful number, since it uses less digits than its factorization.

51589571461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183593062.

The product of its digits is 1512000, while the sum is 52.

The spelling of 51589571461 in words is "fifty-one billion, five hundred eighty-nine million, five hundred seventy-one thousand, four hundred sixty-one".