52145633217 has 4 divisors (see below), whose sum is σ = 69527510960. Its totient is φ = 34763755476.

The previous prime is 52145633161. The next prime is 52145633237. The reversal of 52145633217 is 71233654125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 52145633217 - 2¹¹ = 52145631169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52145633237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8690938867 + ... + 8690938872.

It is an arithmetic number, because the mean of its divisors is an integer number (17381877740).

Almost surely, 2^52145633217 is an apocalyptic number.

It is an amenable number.

52145633217 is a deficient number, since it is larger than the sum of its proper divisors (17381877743).

52145633217 is a wasteful number, since it uses less digits than its factorization.

52145633217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17381877742.

The product of its digits is 151200, while the sum is 39.

The spelling of 52145633217 in words is "fifty-two billion, one hundred forty-five million, six hundred thirty-three thousand, two hundred seventeen".