55543432 has 32 divisors (see below), whose sum is σ = 119260800. Its totient is φ = 23756544.

The previous prime is 55543343. The next prime is 55543451. The reversal of 55543432 is 23434555.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55543394 and 55543403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54544 + ... + 55552.

It is an arithmetic number, because the mean of its divisors is an integer number (3726900).

Almost surely, 2^55543432 is an apocalyptic number.

It is an amenable number.

55543432 is an abundant number, since it is smaller than the sum of its proper divisors (63717368).

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

55543432 is a wasteful number, since it uses less digits than its factorization.

55543432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005 (or 2001 counting only the distinct ones).

The product of its digits is 36000, while the sum is 31.

The square root of 55543432 is about 7452.7466077950. The cubic root of 55543432 is about 381.5436561518.

Adding to 55543432 its reverse (23434555), we get a palindrome (78977987).

The spelling of 55543432 in words is "fifty-five million, five hundred forty-three thousand, four hundred thirty-two".