55738191 has 16 divisors (see below), whose sum is σ = 80051840. Its totient is φ = 34382880.

The previous prime is 55738187. The next prime is 55738211. The reversal of 55738191 is 19183755.

It is not a de Polignac number, because 55738191 - 2² = 55738187 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 (55738091) 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 15 ways as a sum of consecutive naturals, for example, 8920 + ... + 13821.

It is an arithmetic number, because the mean of its divisors is an integer number (5003240).

Almost surely, 2^55738191 is an apocalyptic number.

55738191 is a deficient number, since it is larger than the sum of its proper divisors (24313649).

55738191 is a wasteful number, since it uses less digits than its factorization.

55738191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22806.

The product of its digits is 37800, while the sum is 39.

The square root of 55738191 is about 7465.8014305230. The cubic root of 55738191 is about 381.9890876153.

The spelling of 55738191 in words is "fifty-five million, seven hundred thirty-eight thousand, one hundred ninety-one".