51115101 has 8 divisors (see below), whose sum is σ = 69113664. Its totient is φ = 33596640.

The previous prime is 51115079. The next prime is 51115109. The reversal of 51115101 is 10151115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51115101 - 2⁹ = 51114589 is a prime.

It is a super-2 number, since 2×51115101² = 5225507100480402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51115109) 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, 119776 + ... + 120201.

It is an arithmetic number, because the mean of its divisors is an integer number (8639208).

Almost surely, 2^51115101 is an apocalyptic number.

It is an amenable number.

51115101 is a deficient number, since it is larger than the sum of its proper divisors (17998563).

51115101 is a wasteful number, since it uses less digits than its factorization.

51115101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240051.

The product of its (nonzero) digits is 25, while the sum is 15.

The square root of 51115101 is about 7149.4825686898. The cubic root of 51115101 is about 371.1217503022.

Adding to 51115101 its reverse (10151115), we get a palindrome (61266216).

It can be divided in two parts, 51115 and 101, that multiplied together give a palindrome (5162615).

The spelling of 51115101 in words is "fifty-one million, one hundred fifteen thousand, one hundred one".