55438571 has 4 divisors (see below), whose sum is σ = 57226944. Its totient is φ = 53650200.

The previous prime is 55438553. The next prime is 55438577. The reversal of 55438571 is 17583455.

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 55438571 - 2¹⁴ = 55422187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55438577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894140 + ... + 894201.

It is an arithmetic number, because the mean of its divisors is an integer number (14306736).

Almost surely, 2^55438571 is an apocalyptic number.

55438571 is a deficient number, since it is larger than the sum of its proper divisors (1788373).

55438571 is a wasteful number, since it uses less digits than its factorization.

55438571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788372.

The product of its digits is 84000, while the sum is 38.

The square root of 55438571 is about 7445.7082268915. The cubic root of 55438571 is about 381.3033982001.

The spelling of 55438571 in words is "fifty-five million, four hundred thirty-eight thousand, five hundred seventy-one".