55911071 has 2 divisors, whose sum is σ = 55911072. Its totient is φ = 55911070.

The previous prime is 55911067. The next prime is 55911127. The reversal of 55911071 is 17011955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55911071 - 2² = 55911067 is a prime.

It is a Sophie Germain 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 (55911001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27955535 + 27955536.

It is an arithmetic number, because the mean of its divisors is an integer number (27955536).

Almost surely, 2^55911071 is an apocalyptic number.

55911071 is a deficient number, since it is larger than the sum of its proper divisors (1).

55911071 is an equidigital number, since it uses as much as digits as its factorization.

55911071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 29.

The square root of 55911071 is about 7477.3705939989. The cubic root of 55911071 is about 382.3836113339.

The spelling of 55911071 in words is "fifty-five million, nine hundred eleven thousand, seventy-one".