20045151 has 20 divisors (see below), whose sum is σ = 34222672. Its totient is φ = 11454048.

The previous prime is 20045131. The next prime is 20045161. The reversal of 20045151 is 15154002.

It is not a de Polignac number, because 20045151 - 2⁶ = 20045087 is a prime.

It is a super-2 number, since 2×20045151² = 803616157225602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045101) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17110 + ... + 18243.

Almost surely, 2^20045151 is an apocalyptic number.

20045151 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20045151 is a deficient number, since it is larger than the sum of its proper divisors (14177521).

20045151 is an equidigital number, since it uses as much as digits as its factorization.

20045151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35372 (or 35363 counting only the distinct ones).

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

The square root of 20045151 is about 4477.1811444256. The cubic root of 20045151 is about 271.6458725893.

Adding to 20045151 its reverse (15154002), we get a palindrome (35199153).

The spelling of 20045151 in words is "twenty million, forty-five thousand, one hundred fifty-one".