20363957 has 2 divisors, whose sum is σ = 20363958. Its totient is φ = 20363956.

The previous prime is 20363933. The next prime is 20363963. The reversal of 20363957 is 75936302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11566801 + 8797156 = 3401^2 + 2966^2 .

It is a cyclic number.

It is not a de Polignac number, because 20363957 - 2¹² = 20359861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20363927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10181978 + 10181979.

It is an arithmetic number, because the mean of its divisors is an integer number (10181979).

Almost surely, 2^20363957 is an apocalyptic number.

It is an amenable number.

20363957 is a deficient number, since it is larger than the sum of its proper divisors (1).

20363957 is an equidigital number, since it uses as much as digits as its factorization.

20363957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 35.

The square root of 20363957 is about 4512.6441251222. The cubic root of 20363957 is about 273.0784256785.

The spelling of 20363957 in words is "twenty million, three hundred sixty-three thousand, nine hundred fifty-seven".