55921799 has 8 divisors (see below), whose sum is σ = 58025088. Its totient is φ = 53837280.

The previous prime is 55921777. The next prime is 55921841. The reversal of 55921799 is 99712955.

55921799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55921799 - 2¹⁶ = 55856263 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 (55921739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529 + ... + 10685.

It is an arithmetic number, because the mean of its divisors is an integer number (7253136).

Almost surely, 2^55921799 is an apocalyptic number.

55921799 is a deficient number, since it is larger than the sum of its proper divisors (2103289).

55921799 is a wasteful number, since it uses less digits than its factorization.

55921799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9385.

The product of its digits is 255150, while the sum is 47.

The square root of 55921799 is about 7478.0879240619. The cubic root of 55921799 is about 382.4080665325.

The spelling of 55921799 in words is "fifty-five million, nine hundred twenty-one thousand, seven hundred ninety-nine".