20117377 has 4 divisors (see below), whose sum is σ = 22991296. Its totient is φ = 17243460.

The previous prime is 20117359. The next prime is 20117401. The reversal of 20117377 is 77371102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20117377 - 2¹⁵ = 20084609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20117777) 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 in 3 ways as a sum of consecutive naturals, for example, 1436949 + ... + 1436962.

It is an arithmetic number, because the mean of its divisors is an integer number (5747824).

Almost surely, 2^20117377 is an apocalyptic number.

It is an amenable number.

20117377 is a deficient number, since it is larger than the sum of its proper divisors (2873919).

20117377 is an equidigital number, since it uses as much as digits as its factorization.

20117377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873918.

The product of its (nonzero) digits is 2058, while the sum is 28.

The square root of 20117377 is about 4485.2399043975. The cubic root of 20117377 is about 271.9717432079.

Adding to 20117377 its reverse (77371102), we get a palindrome (97488479).

It can be divided in two parts, 201 and 17377, that added together give a triangular number (17578 = T₁₈₇).

The spelling of 20117377 in words is "twenty million, one hundred seventeen thousand, three hundred seventy-seven".