20520241 has 8 divisors (see below), whose sum is σ = 24831360. Its totient is φ = 16554048.

The previous prime is 20520229. The next prime is 20520257. The reversal of 20520241 is 14202502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20520241 - 2¹¹ = 20518193 is a prime.

It is a super-4 number, since 4×20520241⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20520211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86101 + ... + 86338.

It is an arithmetic number, because the mean of its divisors is an integer number (3103920).

Almost surely, 2^20520241 is an apocalyptic number.

It is an amenable number.

20520241 is a deficient number, since it is larger than the sum of its proper divisors (4311119).

20520241 is a wasteful number, since it uses less digits than its factorization.

20520241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172463.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 20520241 is about 4529.9272621092. The cubic root of 20520241 is about 273.7752299119.

Adding to 20520241 its reverse (14202502), we get a palindrome (34722743).

The spelling of 20520241 in words is "twenty million, five hundred twenty thousand, two hundred forty-one".