20450151 has 24 divisors (see below), whose sum is σ = 31973760. Its totient is φ = 13037112.

The previous prime is 20450149. The next prime is 20450207. The reversal of 20450151 is 15105402.

It is not a de Polignac number, because 20450151 - 2¹ = 20450149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3760 + ... + 7418.

It is an arithmetic number, because the mean of its divisors is an integer number (1332240).

Almost surely, 2^20450151 is an apocalyptic number.

20450151 is a deficient number, since it is larger than the sum of its proper divisors (11523609).

20450151 is an equidigital number, since it uses as much as digits as its factorization.

20450151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697 (or 3685 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 20450151 is about 4522.1843173405. The cubic root of 20450151 is about 273.4631673821.

Adding to 20450151 its reverse (15105402), we get a palindrome (35555553).

The spelling of 20450151 in words is "twenty million, four hundred fifty thousand, one hundred fifty-one".