2251019 has 4 divisors (see below), whose sum is σ = 2254344. Its totient is φ = 2247696.

The previous prime is 2251001. The next prime is 2251031. The reversal of 2251019 is 9101522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2251019 - 2⁸ = 2250763 is a prime.

It is a super-2 number, since 2×2251019² = 10134173076722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2251049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242 + ... + 2135.

It is an arithmetic number, because the mean of its divisors is an integer number (563586).

2^2251019 is an apocalyptic number.

2251019 is a deficient number, since it is larger than the sum of its proper divisors (3325).

2251019 is an equidigital number, since it uses as much as digits as its factorization.

2251019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 2251019 is about 1500.3396282176. The cubic root of 2251019 is about 131.0568484692.

The spelling of 2251019 in words is "two million, two hundred fifty-one thousand, nineteen".