51953522147 has 4 divisors (see below), whose sum is σ = 54212370960. Its totient is φ = 49694673336.

The previous prime is 51953522123. The next prime is 51953522161. The reversal of 51953522147 is 74122535915.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51953522147 - 2²⁰ = 51952473571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51953522098 and 51953522107.

It is not an unprimeable number, because it can be changed into a prime (51953522107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129424372 + ... + 1129424417.

It is an arithmetic number, because the mean of its divisors is an integer number (13553092740).

Almost surely, 2^51953522147 is an apocalyptic number.

51953522147 is a deficient number, since it is larger than the sum of its proper divisors (2258848813).

51953522147 is a wasteful number, since it uses less digits than its factorization.

51953522147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258848812.

The product of its digits is 378000, while the sum is 44.

The spelling of 51953522147 in words is "fifty-one billion, nine hundred fifty-three million, five hundred twenty-two thousand, one hundred forty-seven".