51253155112 has 8 divisors (see below), whose sum is σ = 96099665850. Its totient is φ = 25626577552.

The previous prime is 51253155091. The next prime is 51253155113. The reversal of 51253155112 is 21155135215.

It can be written as a sum of positive squares in only one way, i.e., 33491196036 + 17761959076 = 183006^2 + 133274^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (51253155113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203322187 + ... + 3203322202.

Almost surely, 2^51253155112 is an apocalyptic number.

It is an amenable number.

51253155112 is a deficient number, since it is larger than the sum of its proper divisors (44846510738).

51253155112 is a wasteful number, since it uses less digits than its factorization.

51253155112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6406644395 (or 6406644391 counting only the distinct ones).

The product of its digits is 7500, while the sum is 31.

The spelling of 51253155112 in words is "fifty-one billion, two hundred fifty-three million, one hundred fifty-five thousand, one hundred twelve".