51255332145 has 64 divisors (see below), whose sum is σ = 92055744000. Its totient is φ = 27056187648.

The previous prime is 51255332143. The next prime is 51255332153. The reversal of 51255332145 is 54123355215.

51255332145 is a `hidden beast` number, since 512 + 55 + 33 + 21 + 45 = 666.

It is not a de Polignac number, because 51255332145 - 2¹ = 51255332143 is a prime.

It is a super-3 number, since 3×51255332145³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51255332143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24558292 + ... + 24560378.

It is an arithmetic number, because the mean of its divisors is an integer number (1438371000).

Almost surely, 2^51255332145 is an apocalyptic number.

It is an amenable number.

51255332145 is a deficient number, since it is larger than the sum of its proper divisors (40800411855).

51255332145 is a wasteful number, since it uses less digits than its factorization.

51255332145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3879 (or 3873 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The spelling of 51255332145 in words is "fifty-one billion, two hundred fifty-five million, three hundred thirty-two thousand, one hundred forty-five".