20522065 has 16 divisors (see below), whose sum is σ = 25194240. Its totient is φ = 16044160.

The previous prime is 20522059. The next prime is 20522069. The reversal of 20522065 is 56022502.

It is a de Polignac number, because none of the positive numbers 2^k-20522065 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20522069) 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, 47400 + ... + 47830.

It is an arithmetic number, because the mean of its divisors is an integer number (1574640).

Almost surely, 2^20522065 is an apocalyptic number.

It is an amenable number.

20522065 is a deficient number, since it is larger than the sum of its proper divisors (4672175).

20522065 is a wasteful number, since it uses less digits than its factorization.

20522065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20522065 is about 4530.1285853715. The cubic root of 20522065 is about 273.7833414350.

Adding to 20522065 its reverse (56022502), we get a palindrome (76544567).

The spelling of 20522065 in words is "twenty million, five hundred twenty-two thousand, sixty-five".