20532501 has 32 divisors (see below), whose sum is σ = 33436800. Its totient is φ = 12349440.

The previous prime is 20532461. The next prime is 20532511. The reversal of 20532501 is 10523502.

It is a happy number.

It is not a de Polignac number, because 20532501 - 2⁶ = 20532437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20532511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76195 + ... + 76463.

It is an arithmetic number, because the mean of its divisors is an integer number (1044900).

Almost surely, 2^20532501 is an apocalyptic number.

It is an amenable number.

20532501 is a deficient number, since it is larger than the sum of its proper divisors (12904299).

20532501 is a wasteful number, since it uses less digits than its factorization.

20532501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20532501 is about 4531.2802826574. The cubic root of 20532501 is about 273.8297422036.

It can be divided in two parts, 2053 and 2501, that added together give a palindrome (4554).

The spelling of 20532501 in words is "twenty million, five hundred thirty-two thousand, five hundred one".