55785465 has 24 divisors (see below), whose sum is σ = 100900800. Its totient is φ = 28458144.

The previous prime is 55785403. The next prime is 55785479. The reversal of 55785465 is 56458755.

It is not a de Polignac number, because 55785465 - 2⁸ = 55785209 is a prime.

It is a super-2 number, since 2×55785465² = 6224036210532450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55785465.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25915 + ... + 27984.

It is an arithmetic number, because the mean of its divisors is an integer number (4204200).

Almost surely, 2^55785465 is an apocalyptic number.

It is an amenable number.

55785465 is a deficient number, since it is larger than the sum of its proper divisors (45115335).

55785465 is a wasteful number, since it uses less digits than its factorization.

55785465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53933 (or 53930 counting only the distinct ones).

The product of its digits is 840000, while the sum is 45.

The square root of 55785465 is about 7468.9667960167. The cubic root of 55785465 is about 382.0970509878.

The spelling of 55785465 in words is "fifty-five million, seven hundred eighty-five thousand, four hundred sixty-five".