51111105001 has 8 divisors (see below), whose sum is σ = 55763920800. Its totient is φ = 46459347840.

The previous prime is 51111104981. The next prime is 51111105061. The reversal of 51111105001 is 10050111115.

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 51111105001 - 2¹⁹ = 51110580713 is a prime.

It is a super-2 number, since 2×51111105001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51111105061) 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, 161971 + ... + 358408.

It is an arithmetic number, because the mean of its divisors is an integer number (6970490100).

Almost surely, 2^51111105001 is an apocalyptic number.

It is an amenable number.

51111105001 is a deficient number, since it is larger than the sum of its proper divisors (4652815799).

51111105001 is a wasteful number, since it uses less digits than its factorization.

51111105001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529319.

The product of its (nonzero) digits is 25, while the sum is 16.

Adding to 51111105001 its reverse (10050111115), we get a palindrome (61161216116).

The spelling of 51111105001 in words is "fifty-one billion, one hundred eleven million, one hundred five thousand, one".