20532003 has 16 divisors (see below), whose sum is σ = 28390560. Its totient is φ = 13188096.

The previous prime is 20531999. The next prime is 20532011. The reversal of 20532003 is 30023502.

It is not a de Polignac number, because 20532003 - 2² = 20531999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20532803) 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, 11251 + ... + 12947.

It is an arithmetic number, because the mean of its divisors is an integer number (1774410).

Almost surely, 2^20532003 is an apocalyptic number.

20532003 is a deficient number, since it is larger than the sum of its proper divisors (7858557).

20532003 is a wasteful number, since it uses less digits than its factorization.

20532003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846.

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 20532003 is about 4531.2253309673. The cubic root of 20532003 is about 273.8275283425.

Adding to 20532003 its reverse (30023502), we get a palindrome (50555505).

The spelling of 20532003 in words is "twenty million, five hundred thirty-two thousand, three".