20132501 has 4 divisors (see below), whose sum is σ = 20462604. Its totient is φ = 19802400.

The previous prime is 20132491. The next prime is 20132503. The reversal of 20132501 is 10523102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8236900 + 11895601 = 2870^2 + 3449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20132501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132503) 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, 164960 + ... + 165081.

It is an arithmetic number, because the mean of its divisors is an integer number (5115651).

Almost surely, 2^20132501 is an apocalyptic number.

It is an amenable number.

20132501 is a deficient number, since it is larger than the sum of its proper divisors (330103).

20132501 is an equidigital number, since it uses as much as digits as its factorization.

20132501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330102.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 20132501 is about 4486.9255621193. The cubic root of 20132501 is about 272.0398811549.

Adding to 20132501 its reverse (10523102), we get a palindrome (30655603).

The spelling of 20132501 in words is "twenty million, one hundred thirty-two thousand, five hundred one".