2251005 has 8 divisors (see below), whose sum is σ = 3601632. Its totient is φ = 1200528.

The previous prime is 2251001. The next prime is 2251031. The reversal of 2251005 is 5001522.

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

It is not a de Polignac number, because 2251005 - 2² = 2251001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 150067 = 2251005 / (2 + 2 + 5 + 1 + 0 + 0 + 5).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251001) 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, 75019 + ... + 75048.

It is an arithmetic number, because the mean of its divisors is an integer number (450204).

2^2251005 is an apocalyptic number.

It is an amenable number.

2251005 is a deficient number, since it is larger than the sum of its proper divisors (1350627).

2251005 is a wasteful number, since it uses less digits than its factorization.

2251005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150075.

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 2251005 is about 1500.3349626000. The cubic root of 2251005 is about 131.0565767701.

Adding to 2251005 its reverse (5001522), we get a palindrome (7252527).

The spelling of 2251005 in words is "two million, two hundred fifty-one thousand, five".