55386436 has 12 divisors (see below), whose sum is σ = 110772928. Its totient is φ = 23737032.

The previous prime is 55386403. The next prime is 55386437. The reversal of 55386436 is 63468355.

55386436 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (55386437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989016 + ... + 989071.

Almost surely, 2^55386436 is an apocalyptic number.

It is an amenable number.

55386436 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.

55386436 is a wasteful number, since it uses less digits than its factorization.

55386436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1978098 (or 1978096 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 55386436 is about 7442.2063932681. The cubic root of 55386436 is about 381.1838335053.

The spelling of 55386436 in words is "fifty-five million, three hundred eighty-six thousand, four hundred thirty-six".