51241243645252 has 12 divisors (see below), whose sum is σ = 91859302632636. Its totient is φ = 24995728607360.

The previous prime is 51241243645231. The next prime is 51241243645279. The reversal of 51241243645252 is 25254634214215.

It can be written as a sum of positive squares in 2 ways, for example, as 1477333287936 + 49763910357316 = 1215456^2 + 7054354^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156223303633 + ... + 156223303960.

It is an arithmetic number, because the mean of its divisors is an integer number (7654941886053).

Almost surely, 2^{51241243645252} is an apocalyptic number.

It is an amenable number.

51241243645252 is a deficient number, since it is larger than the sum of its proper divisors (40618058987384).

51241243645252 is a wasteful number, since it uses less digits than its factorization.

51241243645252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312446607638 (or 312446607636 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 46.

Adding to 51241243645252 its reverse (25254634214215), we get a palindrome (76495877859467).

The spelling of 51241243645252 in words is "fifty-one trillion, two hundred forty-one billion, two hundred forty-three million, six hundred forty-five thousand, two hundred fifty-two".