55769285 has 16 divisors (see below), whose sum is σ = 78624000. Its totient is φ = 37439040.

The previous prime is 55769281. The next prime is 55769297. The reversal of 55769285 is 58296755.

It is not a de Polignac number, because 55769285 - 2² = 55769281 is a prime.

It is a super-2 number, since 2×55769285² = 6220426298822450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55769281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38285 + ... + 39714.

It is an arithmetic number, because the mean of its divisors is an integer number (4914000).

Almost surely, 2^55769285 is an apocalyptic number.

55769285 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55769285 is a deficient number, since it is larger than the sum of its proper divisors (22854715).

55769285 is a wasteful number, since it uses less digits than its factorization.

55769285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78028.

The product of its digits is 756000, while the sum is 47.

The square root of 55769285 is about 7467.8835689906. The cubic root of 55769285 is about 382.0601063100.

The spelling of 55769285 in words is "fifty-five million, seven hundred sixty-nine thousand, two hundred eighty-five".