2278529 has 4 divisors (see below), whose sum is σ = 2485680. Its totient is φ = 2071380.

The previous prime is 2278519. The next prime is 2278543. The reversal of 2278529 is 9258722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2278529 is a prime.

It is a d-powerful number, because it can be written as 2¹⁰ + 2¹³ + 7⁷ + 8 + 5⁸ + 2²⁰ + 9⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2278519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103559 + ... + 103580.

It is an arithmetic number, because the mean of its divisors is an integer number (621420).

2^2278529 is an apocalyptic number.

It is an amenable number.

2278529 is a deficient number, since it is larger than the sum of its proper divisors (207151).

2278529 is a wasteful number, since it uses less digits than its factorization.

2278529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207150.

The product of its digits is 20160, while the sum is 35.

The square root of 2278529 is about 1509.4797116888. The cubic root of 2278529 is about 131.5885758877.

The spelling of 2278529 in words is "two million, two hundred seventy-eight thousand, five hundred twenty-nine".