51541555331 has 8 divisors (see below), whose sum is σ = 58995682560. Its totient is φ = 44110190088.

The previous prime is 51541555291. The next prime is 51541555361. The reversal of 51541555331 is 13355514515.

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 51541555331 - 2¹⁴ = 51541538947 is a prime.

It is a super-2 number, since 2×51541555331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51541555361) 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, 5685641 + ... + 5694698.

It is an arithmetic number, because the mean of its divisors is an integer number (7374460320).

Almost surely, 2^51541555331 is an apocalyptic number.

51541555331 is a deficient number, since it is larger than the sum of its proper divisors (7454127229).

51541555331 is a wasteful number, since it uses less digits than its factorization.

51541555331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11380993.

The product of its digits is 112500, while the sum is 38.

The spelling of 51541555331 in words is "fifty-one billion, five hundred forty-one million, five hundred fifty-five thousand, three hundred thirty-one".