55196791 has 4 divisors (see below), whose sum is σ = 59442712. Its totient is φ = 50950872.

The previous prime is 55196789. The next prime is 55196819. The reversal of 55196791 is 19769155.

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 55196791 - 2¹ = 55196789 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 (55196731) 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, 2122941 + ... + 2122966.

It is an arithmetic number, because the mean of its divisors is an integer number (14860678).

Almost surely, 2^55196791 is an apocalyptic number.

55196791 is a deficient number, since it is larger than the sum of its proper divisors (4245921).

55196791 is a wasteful number, since it uses less digits than its factorization.

55196791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4245920.

The product of its digits is 85050, while the sum is 43.

The square root of 55196791 is about 7429.4542868235. The cubic root of 55196791 is about 380.7482739593.

The spelling of 55196791 in words is "fifty-five million, one hundred ninety-six thousand, seven hundred ninety-one".