55190071 has 2 divisors, whose sum is σ = 55190072. Its totient is φ = 55190070.

The previous prime is 55190029. The next prime is 55190077. The reversal of 55190071 is 17009155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55190071 - 2⁹ = 55189559 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 (55190077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27595035 + 27595036.

It is an arithmetic number, because the mean of its divisors is an integer number (27595036).

Almost surely, 2^55190071 is an apocalyptic number.

55190071 is a deficient number, since it is larger than the sum of its proper divisors (1).

55190071 is an equidigital number, since it uses as much as digits as its factorization.

55190071 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 28.

The square root of 55190071 is about 7429.0020191140. The cubic root of 55190071 is about 380.7328217793.

The spelling of 55190071 in words is "fifty-five million, one hundred ninety thousand, seventy-one".