55434439 has 12 divisors (see below), whose sum is σ = 59321416. Its totient is φ = 51769872.

The previous prime is 55434427. The next prime is 55434443. The reversal of 55434439 is 93443455.

It is a de Polignac number, because none of the positive numbers 2^k-55434439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55434398 and 55434407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55434469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21529 + ... + 23965.

Almost surely, 2^55434439 is an apocalyptic number.

55434439 is a deficient number, since it is larger than the sum of its proper divisors (3886977).

55434439 is a wasteful number, since it uses less digits than its factorization.

55434439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526 (or 2503 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The square root of 55434439 is about 7445.4307464377. The cubic root of 55434439 is about 381.2939247429.

The spelling of 55434439 in words is "fifty-five million, four hundred thirty-four thousand, four hundred thirty-nine".