5581251 has 16 divisors (see below), whose sum is σ = 8905120. Its totient is φ = 3434400.

The previous prime is 5581229. The next prime is 5581259. The reversal of 5581251 is 1521855.

It is not a de Polignac number, because 5581251 - 2¹⁰ = 5580227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5581259) 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 15 ways as a sum of consecutive naturals, for example, 7600 + ... + 8301.

It is an arithmetic number, because the mean of its divisors is an integer number (556570).

Almost surely, 2^5581251 is an apocalyptic number.

5581251 is a deficient number, since it is larger than the sum of its proper divisors (3323869).

5581251 is a wasteful number, since it uses less digits than its factorization.

5581251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15923 (or 15917 counting only the distinct ones).

The product of its digits is 2000, while the sum is 27.

The square root of 5581251 is about 2362.4671426287. The cubic root of 5581251 is about 177.3823964752.

It can be divided in two parts, 5581 and 251, that added together give a cube (5832 = 18³).

The spelling of 5581251 in words is "five million, five hundred eighty-one thousand, two hundred fifty-one".