20801241 has 6 divisors (see below), whose sum is σ = 30046250. Its totient is φ = 13867488.

The previous prime is 20801191. The next prime is 20801243. The reversal of 20801241 is 14210802.

It can be written as a sum of positive squares in only one way, i.e., 18147600 + 2653641 = 4260^2 + 1629^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20801241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20801243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1155616 + ... + 1155633.

Almost surely, 2^20801241 is an apocalyptic number.

It is an amenable number.

20801241 is a deficient number, since it is larger than the sum of its proper divisors (9245009).

20801241 is a wasteful number, since it uses less digits than its factorization.

20801241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311255 (or 2311252 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 20801241 is about 4560.8377519925. The cubic root of 20801241 is about 275.0192427306.

It can be divided in two parts, 2080 and 1241, that added together give a triangular number (3321 = T₈₁).

The spelling of 20801241 in words is "twenty million, eight hundred one thousand, two hundred forty-one".