51105505001 has 8 divisors (see below), whose sum is σ = 51394469280. Its totient is φ = 50817336768.

The previous prime is 51105504991. The next prime is 51105505007. The reversal of 51105505001 is 10050550115.

It is a happy number.

51105505001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51105505001 - 2²⁶ = 51038396137 is a prime.

It is a super-2 number, since 2×51105505001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51105505007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70016 + ... + 327281.

It is an arithmetic number, because the mean of its divisors is an integer number (6424308660).

Almost surely, 2^51105505001 is an apocalyptic number.

It is an amenable number.

51105505001 is a deficient number, since it is larger than the sum of its proper divisors (288964279).

51105505001 is a wasteful number, since it uses less digits than its factorization.

51105505001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398023.

The product of its (nonzero) digits is 625, while the sum is 23.

The spelling of 51105505001 in words is "fifty-one billion, one hundred five million, five hundred five thousand, one".