51813141 has 4 divisors (see below), whose sum is σ = 69084192. Its totient is φ = 34542092.

The previous prime is 51813131. The next prime is 51813149. The reversal of 51813141 is 14131815.

51813141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 51813141 - 2⁵ = 51813109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51813149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8635521 + ... + 8635526.

It is an arithmetic number, because the mean of its divisors is an integer number (17271048).

Almost surely, 2^51813141 is an apocalyptic number.

51813141 is the 4553-rd centered pentagonal number.

It is an amenable number.

51813141 is a deficient number, since it is larger than the sum of its proper divisors (17271051).

51813141 is a wasteful number, since it uses less digits than its factorization.

51813141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17271050.

The product of its digits is 480, while the sum is 24.

The square root of 51813141 is about 7198.1345500067. The cubic root of 51813141 is about 372.8034936346.

Adding to 51813141 its reverse (14131815), we get a palindrome (65944956).

The spelling of 51813141 in words is "fifty-one million, eight hundred thirteen thousand, one hundred forty-one".