51535571089 has 4 divisors (see below), whose sum is σ = 51725739520. Its totient is φ = 51345402660.

The previous prime is 51535571039. The next prime is 51535571099. The reversal of 51535571089 is 98017553515.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51535571089 - 2¹⁷ = 51535440017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51535571029) 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, 95083809 + ... + 95084350.

It is an arithmetic number, because the mean of its divisors is an integer number (12931434880).

Almost surely, 2^51535571089 is an apocalyptic number.

It is an amenable number.

51535571089 is a deficient number, since it is larger than the sum of its proper divisors (190168431).

51535571089 is a wasteful number, since it uses less digits than its factorization.

51535571089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190168430.

The product of its (nonzero) digits is 945000, while the sum is 49.

The spelling of 51535571089 in words is "fifty-one billion, five hundred thirty-five million, five hundred seventy-one thousand, eighty-nine".