20457119 has 2 divisors, whose sum is σ = 20457120. Its totient is φ = 20457118.

The previous prime is 20457067. The next prime is 20457127. The reversal of 20457119 is 91175402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20457119 is a prime.

It is a super-2 number, since 2×20457119² = 836987435560322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20457091 and 20457100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20457149) 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 as a sum of consecutive naturals, namely, 10228559 + 10228560.

It is an arithmetic number, because the mean of its divisors is an integer number (10228560).

Almost surely, 2^20457119 is an apocalyptic number.

20457119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20457119 is an equidigital number, since it uses as much as digits as its factorization.

20457119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 20457119 is about 4522.9546758728. The cubic root of 20457119 is about 273.4942229796.

The spelling of 20457119 in words is "twenty million, four hundred fifty-seven thousand, one hundred nineteen".