2251487 has 8 divisors (see below), whose sum is σ = 2642976. Its totient is φ = 1877472.

The previous prime is 2251471. The next prime is 2251489. The reversal of 2251487 is 7841522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2251487 - 2⁴ = 2251471 is a prime.

It is a super-2 number, since 2×2251487² = 10138387422338, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4088 + ... + 4605.

It is an arithmetic number, because the mean of its divisors is an integer number (330372).

2^2251487 is an apocalyptic number.

2251487 is a deficient number, since it is larger than the sum of its proper divisors (391489).

2251487 is an equidigital number, since it uses as much as digits as its factorization.

2251487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8737.

The product of its digits is 4480, while the sum is 29.

The square root of 2251487 is about 1500.4955847986. The cubic root of 2251487 is about 131.0659303346.

The spelling of 2251487 in words is "two million, two hundred fifty-one thousand, four hundred eighty-seven".