5681251 has 4 divisors (see below), whose sum is σ = 5710000. Its totient is φ = 5652504.

The previous prime is 5681243. The next prime is 5681279. The reversal of 5681251 is 1521865.

5681251 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, and also an emirpimes, since its reverse is a distinct semiprime: 1521865 = 5 ⋅304373.

It is a cyclic number.

It is not a de Polignac number, because 5681251 - 2³ = 5681243 is a prime.

It is a super-2 number, since 2×5681251² = 64553225850002, which contains 22 as substring.

It is a Duffinian number.

5681251 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5681201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14076 + ... + 14473.

It is an arithmetic number, because the mean of its divisors is an integer number (1427500).

Almost surely, 2^5681251 is an apocalyptic number.

5681251 is a deficient number, since it is larger than the sum of its proper divisors (28749).

5681251 is a wasteful number, since it uses less digits than its factorization.

5681251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28748.

The product of its digits is 2400, while the sum is 28.

The square root of 5681251 is about 2383.5374970829. The cubic root of 5681251 is about 178.4355260981.

The spelling of 5681251 in words is "five million, six hundred eighty-one thousand, two hundred fifty-one".