55785436 has 12 divisors (see below), whose sum is σ = 111570928. Its totient is φ = 23908032.

The previous prime is 55785403. The next prime is 55785479. The reversal of 55785436 is 63458755.

55785436 is an admirable number.

It is a super-2 number, since 2×55785436² = 6224029739420192, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 55785392 and 55785401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996141 + ... + 996196.

Almost surely, 2^55785436 is an apocalyptic number.

It is an amenable number.

55785436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

55785436 is a wasteful number, since it uses less digits than its factorization.

55785436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1992348 (or 1992346 counting only the distinct ones).

The product of its digits is 504000, while the sum is 43.

The square root of 55785436 is about 7468.9648546502. The cubic root of 55785436 is about 382.0969847769.

The spelling of 55785436 in words is "fifty-five million, seven hundred eighty-five thousand, four hundred thirty-six".