20532001 has 4 divisors (see below), whose sum is σ = 23465152. Its totient is φ = 17598852.

The previous prime is 20531999. The next prime is 20532011. The reversal of 20532001 is 10023502.

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 not a de Polignac number, because 20532001 - 2¹ = 20531999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20532011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1466565 + ... + 1466578.

It is an arithmetic number, because the mean of its divisors is an integer number (5866288).

Almost surely, 2^20532001 is an apocalyptic number.

It is an amenable number.

20532001 is a deficient number, since it is larger than the sum of its proper divisors (2933151).

20532001 is an equidigital number, since it uses as much as digits as its factorization.

20532001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2933150.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 20532001 is about 4531.2251102765. The cubic root of 20532001 is about 273.8275194514.

Adding to 20532001 its reverse (10023502), we get a palindrome (30555503).

The spelling of 20532001 in words is "twenty million, five hundred thirty-two thousand, one".