20614151 has 2 divisors, whose sum is σ = 20614152. Its totient is φ = 20614150.

The previous prime is 20614147. The next prime is 20614171. The reversal of 20614151 is 15141602.

It is an a-pointer prime, because the next prime (20614171) can be obtained adding 20614151 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20614151 - 2² = 20614147 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20614171) 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 as a sum of consecutive naturals, namely, 10307075 + 10307076.

It is an arithmetic number, because the mean of its divisors is an integer number (10307076).

Almost surely, 2^20614151 is an apocalyptic number.

20614151 is a deficient number, since it is larger than the sum of its proper divisors (1).

20614151 is an equidigital number, since it uses as much as digits as its factorization.

20614151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 20614151 is about 4540.2809384442. The cubic root of 20614151 is about 274.1922346093.

Adding to 20614151 its reverse (15141602), we get a palindrome (35755753).

The spelling of 20614151 in words is "twenty million, six hundred fourteen thousand, one hundred fifty-one".