53805795897557 has 4 divisors (see below), whose sum is σ = 58697231888256. Its totient is φ = 48914359906860.

The previous prime is 53805795897527. The next prime is 53805795897631. The reversal of 53805795897557 is 75579859750835.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53805795897557 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 (53805795897527) 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, 2445717995333 + ... + 2445717995354.

It is an arithmetic number, because the mean of its divisors is an integer number (14674307972064).

Almost surely, 2^{53805795897557} is an apocalyptic number.

It is an amenable number.

53805795897557 is a deficient number, since it is larger than the sum of its proper divisors (4891435990699).

53805795897557 is a wasteful number, since it uses less digits than its factorization.

53805795897557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891435990698.

The product of its (nonzero) digits is 16669800000, while the sum is 83.

The spelling of 53805795897557 in words is "fifty-three trillion, eight hundred five billion, seven hundred ninety-five million, eight hundred ninety-seven thousand, five hundred fifty-seven".