21532450003 has 2 divisors, whose sum is σ = 21532450004. Its totient is φ = 21532450002.

The previous prime is 21532449997. The next prime is 21532450013. The reversal of 21532450003 is 30005423512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21532450003 - 2¹⁷ = 21532318931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21532450003.

It is not a weakly prime, because it can be changed into another prime (21532450013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10766225001 + 10766225002.

It is an arithmetic number, because the mean of its divisors is an integer number (10766225002).

Almost surely, 2^21532450003 is an apocalyptic number.

21532450003 is a deficient number, since it is larger than the sum of its proper divisors (1).

21532450003 is an equidigital number, since it uses as much as digits as its factorization.

21532450003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 21532450003 its reverse (30005423512), we get a palindrome (51537873515).

The spelling of 21532450003 in words is "twenty-one billion, five hundred thirty-two million, four hundred fifty thousand, three".