52555621905 has 16 divisors (see below), whose sum is σ = 93432216960. Its totient is φ = 28029664944.

The previous prime is 52555621903. The next prime is 52555621919. The reversal of 52555621905 is 50912655525.

52555621905 is a `hidden beast` number, since 5 + 2 + 5 + 556 + 2 + 1 + 90 + 5 = 666.

It is not a de Polignac number, because 52555621905 - 2¹ = 52555621903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (52555621903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194650317 + ... + 194650586.

It is an arithmetic number, because the mean of its divisors is an integer number (5839513560).

Almost surely, 2^52555621905 is an apocalyptic number.

It is an amenable number.

52555621905 is a deficient number, since it is larger than the sum of its proper divisors (40876595055).

52555621905 is a wasteful number, since it uses less digits than its factorization.

52555621905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389300917 (or 389300911 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 52555621905 in words is "fifty-two billion, five hundred fifty-five million, six hundred twenty-one thousand, nine hundred five".