55433447 has 4 divisors (see below), whose sum is σ = 58694256. Its totient is φ = 52172640.

The previous prime is 55433429. The next prime is 55433453. The reversal of 55433447 is 74433455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55433447 - 2¹⁰ = 55432423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55433347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630379 + ... + 1630412.

It is an arithmetic number, because the mean of its divisors is an integer number (14673564).

Almost surely, 2^55433447 is an apocalyptic number.

55433447 is a deficient number, since it is larger than the sum of its proper divisors (3260809).

55433447 is a wasteful number, since it uses less digits than its factorization.

55433447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260808.

The product of its digits is 100800, while the sum is 35.

The square root of 55433447 is about 7445.3641281001. The cubic root of 55433447 is about 381.2916503095.

The spelling of 55433447 in words is "fifty-five million, four hundred thirty-three thousand, four hundred forty-seven".