55816543 has 2 divisors, whose sum is σ = 55816544. Its totient is φ = 55816542.

The previous prime is 55816529. The next prime is 55816549. The reversal of 55816543 is 34561855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55816543 - 2⁵ = 55816511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55816549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27908271 + 27908272.

It is an arithmetic number, because the mean of its divisors is an integer number (27908272).

Almost surely, 2^55816543 is an apocalyptic number.

55816543 is a deficient number, since it is larger than the sum of its proper divisors (1).

55816543 is an equidigital number, since it uses as much as digits as its factorization.

55816543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 37.

The square root of 55816543 is about 7471.0469815147. The cubic root of 55816543 is about 382.1679930494.

The spelling of 55816543 in words is "fifty-five million, eight hundred sixteen thousand, five hundred forty-three".