55719643 has 16 divisors (see below), whose sum is σ = 66689280. Its totient is φ = 45543456.

The previous prime is 55719641. The next prime is 55719649. The reversal of 55719643 is 34691755.

It is not a de Polignac number, because 55719643 - 2¹ = 55719641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55719596 and 55719605.

It is not an unprimeable number, because it can be changed into a prime (55719641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15196 + ... + 18502.

It is an arithmetic number, because the mean of its divisors is an integer number (4168080).

Almost surely, 2^55719643 is an apocalyptic number.

55719643 is a deficient number, since it is larger than the sum of its proper divisors (10969637).

55719643 is a wasteful number, since it uses less digits than its factorization.

55719643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3426.

The product of its digits is 113400, while the sum is 40.

The square root of 55719643 is about 7464.5591296472. The cubic root of 55719643 is about 381.9467114066.

The spelling of 55719643 in words is "fifty-five million, seven hundred nineteen thousand, six hundred forty-three".