8555385401 has 4 divisors (see below), whose sum is σ = 8607872592. Its totient is φ = 8502898212.

The previous prime is 8555385389. The next prime is 8555385403. The reversal of 8555385401 is 1045835558.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1045835558 = 2 ⋅522917779.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8555385401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8555385403) 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, 26243351 + ... + 26243676.

It is an arithmetic number, because the mean of its divisors is an integer number (2151968148).

Almost surely, 2^8555385401 is an apocalyptic number.

It is an amenable number.

8555385401 is a deficient number, since it is larger than the sum of its proper divisors (52487191).

8555385401 is a wasteful number, since it uses less digits than its factorization.

8555385401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52487190.

The product of its (nonzero) digits is 480000, while the sum is 44.

The square root of 8555385401 is about 92495.3263738228. The cubic root of 8555385401 is about 2045.2505875935.

The spelling of 8555385401 in words is "eight billion, five hundred fifty-five million, three hundred eighty-five thousand, four hundred one".