55786284 has 18 divisors (see below), whose sum is σ = 141015420. Its totient is φ = 18595416.

The previous prime is 55786273. The next prime is 55786301. The reversal of 55786284 is 48268755.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×55786284² = 6224218965057312, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 774774 + ... + 774845.

It is an arithmetic number, because the mean of its divisors is an integer number (7834190).

Almost surely, 2^55786284 is an apocalyptic number.

It is an amenable number.

55786284 is an abundant number, since it is smaller than the sum of its proper divisors (85229136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55786284 is a wasteful number, since it uses less digits than its factorization.

55786284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549629 (or 1549624 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 55786284 is about 7469.0216226759. The cubic root of 55786284 is about 382.0989208653.

The spelling of 55786284 in words is "fifty-five million, seven hundred eighty-six thousand, two hundred eighty-four".