51541324431 has 4 divisors (see below), whose sum is σ = 68721765912. Its totient is φ = 34360882952.

The previous prime is 51541324411. The next prime is 51541324451. The reversal of 51541324431 is 13442314515.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (51541324411) and next prime (51541324451).

It is a cyclic number.

It is not a de Polignac number, because 51541324431 - 2¹⁷ = 51541193359 is a prime.

It is a super-2 number, since 2×51541324431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51541324392 and 51541324401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51541324411) 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, 8590220736 + ... + 8590220741.

It is an arithmetic number, because the mean of its divisors is an integer number (17180441478).

Almost surely, 2^51541324431 is an apocalyptic number.

51541324431 is a deficient number, since it is larger than the sum of its proper divisors (17180441481).

51541324431 is a wasteful number, since it uses less digits than its factorization.

51541324431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17180441480.

The product of its digits is 28800, while the sum is 33.

Adding to 51541324431 its reverse (13442314515), we get a palindrome (64983638946).

The spelling of 51541324431 in words is "fifty-one billion, five hundred forty-one million, three hundred twenty-four thousand, four hundred thirty-one".