51224131 has 8 divisors (see below), whose sum is σ = 58612320. Its totient is φ = 43853568.

The previous prime is 51224101. The next prime is 51224161. The reversal of 51224131 is 13142215.

51224131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51224101) and next prime (51224161).

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 51224131 - 2⁹ = 51223619 is a prime.

It is a super-2 number, since 2×51224131² = 5247823193410322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51224099 and 51224108.

It is not an unprimeable number, because it can be changed into a prime (51224101) 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 7 ways as a sum of consecutive naturals, for example, 2565 + ... + 10441.

It is an arithmetic number, because the mean of its divisors is an integer number (7326540).

Almost surely, 2^51224131 is an apocalyptic number.

51224131 is a deficient number, since it is larger than the sum of its proper divisors (7388189).

51224131 is an equidigital number, since it uses as much as digits as its factorization.

51224131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8813.

The product of its digits is 240, while the sum is 19.

The square root of 51224131 is about 7157.1035342518. The cubic root of 51224131 is about 371.3854340787.

Adding to 51224131 its reverse (13142215), we get a palindrome (64366346).

The spelling of 51224131 in words is "fifty-one million, two hundred twenty-four thousand, one hundred thirty-one".