5155571887 has 4 divisors (see below), whose sum is σ = 5175632736. Its totient is φ = 5135511040.

The previous prime is 5155571857. The next prime is 5155571899. The reversal of 5155571887 is 7881755515.

5155571887 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5155571887 - 2²⁷ = 5021354159 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 (5155571857) 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, 10030039 + ... + 10030552.

It is an arithmetic number, because the mean of its divisors is an integer number (1293908184).

Almost surely, 2^5155571887 is an apocalyptic number.

5155571887 is a deficient number, since it is larger than the sum of its proper divisors (20060849).

5155571887 is a wasteful number, since it uses less digits than its factorization.

5155571887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20060848.

The product of its digits is 1960000, while the sum is 52.

The square root of 5155571887 is about 71802.3111536112. The cubic root of 5155571887 is about 1727.5300700762.

The spelling of 5155571887 in words is "five billion, one hundred fifty-five million, five hundred seventy-one thousand, eight hundred eighty-seven".