51245052502 has 24 divisors (see below), whose sum is σ = 91319893344. Its totient is φ = 21494883312.

The previous prime is 51245052487. The next prime is 51245052511. The reversal of 51245052502 is 20525054215.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5558253 + ... + 5567464.

It is an arithmetic number, because the mean of its divisors is an integer number (3804995556).

Almost surely, 2^51245052502 is an apocalyptic number.

51245052502 is a deficient number, since it is larger than the sum of its proper divisors (40074840842).

51245052502 is a wasteful number, since it uses less digits than its factorization.

51245052502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11125780 (or 11125773 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The spelling of 51245052502 in words is "fifty-one billion, two hundred forty-five million, fifty-two thousand, five hundred two".