20375039 has 2 divisors, whose sum is σ = 20375040. Its totient is φ = 20375038.

The previous prime is 20375009. The next prime is 20375041. The reversal of 20375039 is 93057302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20375039 is a prime.

Together with 20375041, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20375009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10187519 + 10187520.

It is an arithmetic number, because the mean of its divisors is an integer number (10187520).

Almost surely, 2^20375039 is an apocalyptic number.

20375039 is a deficient number, since it is larger than the sum of its proper divisors (1).

20375039 is an equidigital number, since it uses as much as digits as its factorization.

20375039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 20375039 is about 4513.8718413353. The cubic root of 20375039 is about 273.1279528295.

The spelling of 20375039 in words is "twenty million, three hundred seventy-five thousand, thirty-nine".