20451141 has 12 divisors (see below), whose sum is σ = 29596320. Its totient is φ = 13608360.

The previous prime is 20451131. The next prime is 20451181. The reversal of 20451141 is 14115402.

It is not a de Polignac number, because 20451141 - 2⁶ = 20451077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20451131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3736 + ... + 7406.

It is an arithmetic number, because the mean of its divisors is an integer number (2466360).

Almost surely, 2^20451141 is an apocalyptic number.

It is an amenable number.

20451141 is a deficient number, since it is larger than the sum of its proper divisors (9145179).

20451141 is a wasteful number, since it uses less digits than its factorization.

20451141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296 (or 4293 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 20451141 is about 4522.2937763927. The cubic root of 20451141 is about 273.4675801314.

Adding to 20451141 its reverse (14115402), we get a palindrome (34566543).

The spelling of 20451141 in words is "twenty million, four hundred fifty-one thousand, one hundred forty-one".