51659157001 has 4 divisors (see below), whose sum is σ = 51860165652. Its totient is φ = 51458148352.

The previous prime is 51659156977. The next prime is 51659157029. The reversal of 51659157001 is 10075195615.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35255695225 + 16403461776 = 187765^2 + 128076^2 .

It is a cyclic number.

It is not a de Polignac number, because 51659157001 - 2⁹ = 51659156489 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51659155001) 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, 100503940 + ... + 100504453.

It is an arithmetic number, because the mean of its divisors is an integer number (12965041413).

Almost surely, 2^51659157001 is an apocalyptic number.

It is an amenable number.

51659157001 is a deficient number, since it is larger than the sum of its proper divisors (201008651).

51659157001 is a wasteful number, since it uses less digits than its factorization.

51659157001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201008650.

The product of its (nonzero) digits is 47250, while the sum is 40.

The spelling of 51659157001 in words is "fifty-one billion, six hundred fifty-nine million, one hundred fifty-seven thousand, one".