2281539 has 16 divisors (see below), whose sum is σ = 3449600. Its totient is φ = 1329696.

The previous prime is 2281529. The next prime is 2281567. The reversal of 2281539 is 9351822.

It is a happy number.

It is not a de Polignac number, because 2281539 - 2¹¹ = 2279491 is a prime.

It is an Ulam number.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 799 + ... + 2280.

It is an arithmetic number, because the mean of its divisors is an integer number (215600).

2^2281539 is an apocalyptic number.

2281539 is a deficient number, since it is larger than the sum of its proper divisors (1168061).

2281539 is a wasteful number, since it uses less digits than its factorization.

2281539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3114.

The product of its digits is 4320, while the sum is 30.

The square root of 2281539 is about 1510.4764149102. The cubic root of 2281539 is about 131.6464944439.

The spelling of 2281539 in words is "two million, two hundred eighty-one thousand, five hundred thirty-nine".