20552530 has 8 divisors (see below), whose sum is σ = 36994572. Its totient is φ = 8221008.

The previous prime is 20552527. The next prime is 20552531. The reversal of 20552530 is 3525502.

It can be written as a sum of positive squares in 2 ways, for example, as 18844281 + 1708249 = 4341^2 + 1307^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20552531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1027617 + ... + 1027636.

Almost surely, 2^20552530 is an apocalyptic number.

20552530 is a deficient number, since it is larger than the sum of its proper divisors (16442042).

20552530 is a wasteful number, since it uses less digits than its factorization.

20552530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055260.

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 20552530 is about 4533.4898257303. The cubic root of 20552530 is about 273.9187515507.

The spelling of 20552530 in words is "twenty million, five hundred fifty-two thousand, five hundred thirty".