55517432 has 8 divisors (see below), whose sum is σ = 104095200. Its totient is φ = 27758712.

The previous prime is 55517431. The next prime is 55517443. The reversal of 55517432 is 23471555.

55517432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55517431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3469832 + ... + 3469847.

It is an arithmetic number, because the mean of its divisors is an integer number (13011900).

Almost surely, 2^55517432 is an apocalyptic number.

It is an amenable number.

55517432 is a deficient number, since it is larger than the sum of its proper divisors (48577768).

55517432 is a wasteful number, since it uses less digits than its factorization.

55517432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6939685 (or 6939681 counting only the distinct ones).

The product of its digits is 21000, while the sum is 32.

The square root of 55517432 is about 7451.0020802574. The cubic root of 55517432 is about 381.4841130580.

Adding to 55517432 its reverse (23471555), we get a palindrome (78988987).

The spelling of 55517432 in words is "fifty-five million, five hundred seventeen thousand, four hundred thirty-two".