51284527207 has 4 divisors (see below), whose sum is σ = 52535369376. Its totient is φ = 50033685040.

The previous prime is 51284527201. The next prime is 51284527247. The reversal of 51284527207 is 70272548215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70272548215 = 5 ⋅14054509643.

It is a cyclic number.

It is not a de Polignac number, because 51284527207 - 2³ = 51284527199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51284527201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625421023 + ... + 625421104.

It is an arithmetic number, because the mean of its divisors is an integer number (13133842344).

Almost surely, 2^51284527207 is an apocalyptic number.

51284527207 is a deficient number, since it is larger than the sum of its proper divisors (1250842169).

51284527207 is a wasteful number, since it uses less digits than its factorization.

51284527207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250842168.

The product of its (nonzero) digits is 313600, while the sum is 43.

The spelling of 51284527207 in words is "fifty-one billion, two hundred eighty-four million, five hundred twenty-seven thousand, two hundred seven".