52945591821 has 8 divisors (see below), whose sum is σ = 70597702560. Its totient is φ = 35295271152.

The previous prime is 52945591739. The next prime is 52945591823. The reversal of 52945591821 is 12819554925.

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

It is not a de Polignac number, because 52945591821 - 2¹³ = 52945583629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52945591823) 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 7 ways as a sum of consecutive naturals, for example, 376911 + ... + 497948.

It is an arithmetic number, because the mean of its divisors is an integer number (8824712820).

Almost surely, 2^52945591821 is an apocalyptic number.

It is an amenable number.

52945591821 is a deficient number, since it is larger than the sum of its proper divisors (17652110739).

52945591821 is a wasteful number, since it uses less digits than its factorization.

52945591821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895035.

The product of its digits is 1296000, while the sum is 51.

The spelling of 52945591821 in words is "fifty-two billion, nine hundred forty-five million, five hundred ninety-one thousand, eight hundred twenty-one".