21060532 has 12 divisors (see below), whose sum is σ = 38045056. Its totient is φ = 10190520.

The previous prime is 21060509. The next prime is 21060539. The reversal of 21060532 is 23506012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21060539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84798 + ... + 85045.

Almost surely, 2^21060532 is an apocalyptic number.

It is an amenable number.

21060532 is a deficient number, since it is larger than the sum of its proper divisors (16984524).

21060532 is a wasteful number, since it uses less digits than its factorization.

21060532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169878 (or 169876 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 21060532 is about 4589.1755250807. The cubic root of 21060532 is about 276.1572477870.

Adding to 21060532 its reverse (23506012), we get a palindrome (44566544).

The spelling of 21060532 in words is "twenty-one million, sixty thousand, five hundred thirty-two".