51515132341 has 4 divisors (see below), whose sum is σ = 51524993152. Its totient is φ = 51505271532.

The previous prime is 51515132311. The next prime is 51515132369. The reversal of 51515132341 is 14323151515.

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 51515132341 - 2⁷ = 51515132213 is a prime.

It is a super-2 number, since 2×51515132341² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51515132311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4922565 + ... + 4933018.

It is an arithmetic number, because the mean of its divisors is an integer number (12881248288).

Almost surely, 2^51515132341 is an apocalyptic number.

It is an amenable number.

51515132341 is a deficient number, since it is larger than the sum of its proper divisors (9860811).

51515132341 is an equidigital number, since it uses as much as digits as its factorization.

51515132341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9860810.

The product of its digits is 9000, while the sum is 31.

Adding to 51515132341 its reverse (14323151515), we get a palindrome (65838283856).

The spelling of 51515132341 in words is "fifty-one billion, five hundred fifteen million, one hundred thirty-two thousand, three hundred forty-one".