5256387 has 8 divisors (see below), whose sum is σ = 7787280. Its totient is φ = 3504240.

The previous prime is 5256379. The next prime is 5256389. The reversal of 5256387 is 7836525.

It is not a de Polignac number, because 5256387 - 2³ = 5256379 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (5256389) 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, 97314 + ... + 97367.

It is an arithmetic number, because the mean of its divisors is an integer number (973410).

Almost surely, 2^5256387 is an apocalyptic number.

5256387 is a deficient number, since it is larger than the sum of its proper divisors (2530893).

5256387 is a wasteful number, since it uses less digits than its factorization.

5256387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194690 (or 194684 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 5256387 is about 2292.6811814991. The cubic root of 5256387 is about 173.8717842604.

It can be divided in two parts, 52563 and 87, that added together give a triangular number (52650 = T₃₂₄).

The spelling of 5256387 in words is "five million, two hundred fifty-six thousand, three hundred eighty-seven".