2281519 has 4 divisors (see below), whose sum is σ = 2415744. Its totient is φ = 2147296.

The previous prime is 2281493. The next prime is 2281529. The reversal of 2281519 is 9151822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9151822 = 2 ⋅4575911.

It is a cyclic number.

It is not a de Polignac number, because 2281519 - 2¹¹ = 2279471 is a prime.

It is a super-2 number, since 2×2281519² = 10410657894722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281529) 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, 67087 + ... + 67120.

It is an arithmetic number, because the mean of its divisors is an integer number (603936).

2^2281519 is an apocalyptic number.

2281519 is a deficient number, since it is larger than the sum of its proper divisors (134225).

2281519 is a wasteful number, since it uses less digits than its factorization.

2281519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134224.

The product of its digits is 1440, while the sum is 28.

The square root of 2281519 is about 1510.4697944679. The cubic root of 2281519 is about 131.6461097711.

The spelling of 2281519 in words is "two million, two hundred eighty-one thousand, five hundred nineteen".