55733191 has 4 divisors (see below), whose sum is σ = 59011632. Its totient is φ = 52454752.

The previous prime is 55733179. The next prime is 55733201. The reversal of 55733191 is 19133755.

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 55733191 - 2²¹ = 53636039 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 (55733101) 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, 1639195 + ... + 1639228.

It is an arithmetic number, because the mean of its divisors is an integer number (14752908).

Almost surely, 2^55733191 is an apocalyptic number.

55733191 is a deficient number, since it is larger than the sum of its proper divisors (3278441).

55733191 is a wasteful number, since it uses less digits than its factorization.

55733191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278440.

The product of its digits is 14175, while the sum is 34.

The square root of 55733191 is about 7465.4665627809. The cubic root of 55733191 is about 381.9776651507.

The spelling of 55733191 in words is "fifty-five million, seven hundred thirty-three thousand, one hundred ninety-one".