20055377 has 2 divisors, whose sum is σ = 20055378. Its totient is φ = 20055376.

The previous prime is 20055313. The next prime is 20055391. The reversal of 20055377 is 77355002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19989841 + 65536 = 4471^2 + 256^2 .

It is a cyclic number.

It is not a de Polignac number, because 20055377 - 2⁶ = 20055313 is a prime.

It is a super-2 number, since 2×20055377² = 804436293224258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20655377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10027688 + 10027689.

It is an arithmetic number, because the mean of its divisors is an integer number (10027689).

Almost surely, 2^20055377 is an apocalyptic number.

It is an amenable number.

20055377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20055377 is an equidigital number, since it uses as much as digits as its factorization.

20055377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7350, while the sum is 29.

The square root of 20055377 is about 4478.3230120214. The cubic root of 20055377 is about 271.6920579644.

The spelling of 20055377 in words is "twenty million, fifty-five thousand, three hundred seventy-seven".