5171387256 has 48 divisors (see below), whose sum is σ = 16006676400. Its totient is φ = 1477539072.

The previous prime is 5171387239. The next prime is 5171387261. The reversal of 5171387256 is 6527831715.

It is a happy number.

5171387256 is a `hidden beast` number, since 5 + 17 + 1 + 387 + 256 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5129841 + ... + 5130848.

It is an arithmetic number, because the mean of its divisors is an integer number (333472425).

Almost surely, 2^5171387256 is an apocalyptic number.

5171387256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

5171387256 is an abundant number, since it is smaller than the sum of its proper divisors (10835289144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5171387256 is a wasteful number, since it uses less digits than its factorization.

5171387256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260708 (or 10260701 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 5171387256 is about 71912.3581590814. The cubic root of 5171387256 is about 1729.2947392030.

The spelling of 5171387256 in words is "five billion, one hundred seventy-one million, three hundred eighty-seven thousand, two hundred fifty-six".