51555053145 has 32 divisors (see below), whose sum is σ = 87389919360. Its totient is φ = 25863920640.

The previous prime is 51555053141. The next prime is 51555053149. The reversal of 51555053145 is 54135055515.

It is an interprime number because it is at equal distance from previous prime (51555053141) and next prime (51555053149).

It is not a de Polignac number, because 51555053145 - 2² = 51555053141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51555053141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 399690 + ... + 512700.

It is an arithmetic number, because the mean of its divisors is an integer number (2730934980).

Almost surely, 2^51555053145 is an apocalyptic number.

It is an amenable number.

51555053145 is a deficient number, since it is larger than the sum of its proper divisors (35834866215).

51555053145 is a wasteful number, since it uses less digits than its factorization.

51555053145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114825.

The product of its (nonzero) digits is 187500, while the sum is 39.

The spelling of 51555053145 in words is "fifty-one billion, five hundred fifty-five million, fifty-three thousand, one hundred forty-five".