55145432 has 16 divisors (see below), whose sum is σ = 104213760. Its totient is φ = 27355104.

The previous prime is 55145417. The next prime is 55145473. The reversal of 55145432 is 23454155.

It is a junction number, because it is equal to n+sod(n) for n = 55145395 and 55145404.

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, 26123 + ... + 28154.

It is an arithmetic number, because the mean of its divisors is an integer number (6513360).

Almost surely, 2^55145432 is an apocalyptic number.

It is an amenable number.

55145432 is a deficient number, since it is larger than the sum of its proper divisors (49068328).

55145432 is a wasteful number, since it uses less digits than its factorization.

55145432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54410 (or 54406 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 55145432 is about 7425.9970374354. The cubic root of 55145432 is about 380.6301456016.

Adding to 55145432 its reverse (23454155), we get a palindrome (78599587).

The spelling of 55145432 in words is "fifty-five million, one hundred forty-five thousand, four hundred thirty-two".