51110051051001 has 4 divisors (see below), whose sum is σ = 68146734734672. Its totient is φ = 34073367367332.

The previous prime is 51110051050999. The next prime is 51110051051009. The reversal of 51110051051001 is 10015015001115.

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 not a de Polignac number, because 51110051051001 - 2¹ = 51110051050999 is a prime.

It is a super-2 number, since 2×51110051051001² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51110051051009) 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, 8518341841831 + ... + 8518341841836.

It is an arithmetic number, because the mean of its divisors is an integer number (17036683683668).

Almost surely, 2^{51110051051001} is an apocalyptic number.

It is an amenable number.

51110051051001 is a deficient number, since it is larger than the sum of its proper divisors (17036683683671).

51110051051001 is a wasteful number, since it uses less digits than its factorization.

51110051051001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17036683683670.

The product of its (nonzero) digits is 125, while the sum is 21.

Adding to 51110051051001 its reverse (10015015001115), we get a palindrome (61125066052116).

The spelling of 51110051051001 in words is "fifty-one trillion, one hundred ten billion, fifty-one million, fifty-one thousand, one".