55153432 has 8 divisors (see below), whose sum is σ = 103412700. Its totient is φ = 27576712.

The previous prime is 55153429. The next prime is 55153453. The reversal of 55153432 is 23435155.

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

It is a super-2 number, since 2×55153432² = 6083802122757248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55153432.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3447082 + ... + 3447097.

Almost surely, 2^55153432 is an apocalyptic number.

It is an amenable number.

55153432 is a deficient number, since it is larger than the sum of its proper divisors (48259268).

55153432 is a wasteful number, since it uses less digits than its factorization.

55153432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6894185 (or 6894181 counting only the distinct ones).

The product of its digits is 9000, while the sum is 28.

The square root of 55153432 is about 7426.5356661097. The cubic root of 55153432 is about 380.6485508367.

Adding to 55153432 its reverse (23435155), we get a palindrome (78588587).

The spelling of 55153432 in words is "fifty-five million, one hundred fifty-three thousand, four hundred thirty-two".