2564522 has 4 divisors (see below), whose sum is σ = 3846786. Its totient is φ = 1282260.

The previous prime is 2564521. The next prime is 2564539. The reversal of 2564522 is 2254652.

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

It can be written as a sum of positive squares in only one way, i.e., 2524921 + 39601 = 1589^2 + 199^2 .

It is a d-powerful number, because it can be written as 2⁹ + 5⁷ + 6³ + 4³ + 5⁹ + 2¹³ + 2¹⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 2564491 and 2564500.

It is not an unprimeable number, because it can be changed into a prime (2564521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641129 + ... + 641132.

2^2564522 is an apocalyptic number.

2564522 is a deficient number, since it is larger than the sum of its proper divisors (1282264).

2564522 is a wasteful number, since it uses less digits than its factorization.

2564522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282263.

The product of its digits is 4800, while the sum is 26.

The square root of 2564522 is about 1601.4125015123. The cubic root of 2564522 is about 136.8785753464.

The spelling of 2564522 in words is "two million, five hundred sixty-four thousand, five hundred twenty-two".