20555323 has 2 divisors, whose sum is σ = 20555324. Its totient is φ = 20555322.

The previous prime is 20555299. The next prime is 20555347. The reversal of 20555323 is 32355502.

It is a balanced prime because it is at equal distance from previous prime (20555299) and next prime (20555347).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20555323 is a prime.

It is not a weakly prime, because it can be changed into another prime (20555383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10277661 + 10277662.

It is an arithmetic number, because the mean of its divisors is an integer number (10277662).

Almost surely, 2^20555323 is an apocalyptic number.

20555323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20555323 is an equidigital number, since it uses as much as digits as its factorization.

20555323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 20555323 is about 4533.7978561025. The cubic root of 20555323 is about 273.9311591135.

The spelling of 20555323 in words is "twenty million, five hundred fifty-five thousand, three hundred twenty-three".