20051241 has 12 divisors (see below), whose sum is σ = 31100112. Its totient is φ = 11457768.

The previous prime is 20051237. The next prime is 20051243. The reversal of 20051241 is 14215002.

It is not a de Polignac number, because 20051241 - 2² = 20051237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20051241.

It is not an unprimeable number, because it can be changed into a prime (20051243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68055 + ... + 68348.

It is an arithmetic number, because the mean of its divisors is an integer number (2591676).

Almost surely, 2^20051241 is an apocalyptic number.

20051241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20051241 is a deficient number, since it is larger than the sum of its proper divisors (11048871).

20051241 is a wasteful number, since it uses less digits than its factorization.

20051241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136420 (or 136413 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20051241 is about 4477.8612082109. The cubic root of 20051241 is about 271.6733797547.

Adding to 20051241 its reverse (14215002), we get a palindrome (34266243).

The spelling of 20051241 in words is "twenty million, fifty-one thousand, two hundred forty-one".