52121657557 has 8 divisors (see below), whose sum is σ = 52849135296. Its totient is φ = 51394544352.

The previous prime is 52121657513. The next prime is 52121657587. The reversal of 52121657557 is 75575612125.

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

It is a cyclic number.

It is not a de Polignac number, because 52121657557 - 2¹⁹ = 52121133269 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 (52121657507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203418 + ... + 381604.

It is an arithmetic number, because the mean of its divisors is an integer number (6606141912).

Almost surely, 2^52121657557 is an apocalyptic number.

It is an amenable number.

52121657557 is a deficient number, since it is larger than the sum of its proper divisors (727477739).

52121657557 is a wasteful number, since it uses less digits than its factorization.

52121657557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182267.

The product of its digits is 735000, while the sum is 46.

The spelling of 52121657557 in words is "fifty-two billion, one hundred twenty-one million, six hundred fifty-seven thousand, five hundred fifty-seven".