55438573 has 4 divisors (see below), whose sum is σ = 55472508. Its totient is φ = 55404640.

The previous prime is 55438553. The next prime is 55438577. The reversal of 55438573 is 37583455.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47155689 + 8282884 = 6867^2 + 2878^2 .

It is a cyclic number.

It is not a de Polignac number, because 55438573 - 2⁵ = 55438541 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 (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, 14386 + ... + 17827.

It is an arithmetic number, because the mean of its divisors is an integer number (13868127).

Almost surely, 2^55438573 is an apocalyptic number.

It is an amenable number.

55438573 is a deficient number, since it is larger than the sum of its proper divisors (33935).

55438573 is a wasteful number, since it uses less digits than its factorization.

55438573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33934.

The product of its digits is 252000, while the sum is 40.

The square root of 55438573 is about 7445.7083611971. The cubic root of 55438573 is about 381.3034027854.

The spelling of 55438573 in words is "fifty-five million, four hundred thirty-eight thousand, five hundred seventy-three".