55782165 has 16 divisors (see below), whose sum is σ = 89503488. Its totient is φ = 29666496.

The previous prime is 55782161. The next prime is 55782169. The reversal of 55782165 is 56128755.

55782165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55782161) and next prime (55782169).

It is not a de Polignac number, because 55782165 - 2² = 55782161 is a prime.

It is a super-2 number, since 2×55782165² = 6223299864174450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55782161) 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 15 ways as a sum of consecutive naturals, for example, 439 + ... + 10571.

It is an arithmetic number, because the mean of its divisors is an integer number (5593968).

Almost surely, 2^55782165 is an apocalyptic number.

It is an amenable number.

55782165 is a deficient number, since it is larger than the sum of its proper divisors (33721323).

55782165 is a wasteful number, since it uses less digits than its factorization.

55782165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10508.

The product of its digits is 84000, while the sum is 39.

The square root of 55782165 is about 7468.7458786600. The cubic root of 55782165 is about 382.0895164975.

The spelling of 55782165 in words is "fifty-five million, seven hundred eighty-two thousand, one hundred sixty-five".