55160993 has 4 divisors (see below), whose sum is σ = 55499568. Its totient is φ = 54822420.

The previous prime is 55160981. The next prime is 55161011. The reversal of 55160993 is 39906155.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39906155 = 5 ⋅7981231.

It is a cyclic number.

It is not a de Polignac number, because 55160993 - 2⁸ = 55160737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55160953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169043 + ... + 169368.

It is an arithmetic number, because the mean of its divisors is an integer number (13874892).

Almost surely, 2^55160993 is an apocalyptic number.

It is an amenable number.

55160993 is a deficient number, since it is larger than the sum of its proper divisors (338575).

55160993 is a wasteful number, since it uses less digits than its factorization.

55160993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338574.

The product of its (nonzero) digits is 36450, while the sum is 38.

The square root of 55160993 is about 7427.0447016293. The cubic root of 55160993 is about 380.6659444487.

The spelling of 55160993 in words is "fifty-five million, one hundred sixty thousand, nine hundred ninety-three".