55919711 has 2 divisors, whose sum is σ = 55919712. Its totient is φ = 55919710.

The previous prime is 55919687. The next prime is 55919791. The reversal of 55919711 is 11791955.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55919711 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55919791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27959855 + 27959856.

It is an arithmetic number, because the mean of its divisors is an integer number (27959856).

Almost surely, 2^55919711 is an apocalyptic number.

55919711 is a deficient number, since it is larger than the sum of its proper divisors (1).

55919711 is an equidigital number, since it uses as much as digits as its factorization.

55919711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14175, while the sum is 38.

The square root of 55919711 is about 7477.9483148789. The cubic root of 55919711 is about 382.4033070410.

The spelling of 55919711 in words is "fifty-five million, nine hundred nineteen thousand, seven hundred eleven".