51245052503 has 8 divisors (see below), whose sum is σ = 54918318048. Its totient is φ = 47692221984.

The previous prime is 51245052487. The next prime is 51245052511. The reversal of 51245052503 is 30525054215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51245052503 - 2⁴ = 51245052487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51245052503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51245052563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30107876 + ... + 30109577.

It is an arithmetic number, because the mean of its divisors is an integer number (6864789756).

Almost surely, 2^51245052503 is an apocalyptic number.

51245052503 is a deficient number, since it is larger than the sum of its proper divisors (3673265545).

51245052503 is a wasteful number, since it uses less digits than its factorization.

51245052503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60217513.

The product of its (nonzero) digits is 30000, while the sum is 32.

The spelling of 51245052503 in words is "fifty-one billion, two hundred forty-five million, fifty-two thousand, five hundred three".