54390071 has 2 divisors, whose sum is σ = 54390072. Its totient is φ = 54390070.

The previous prime is 54390041. The next prime is 54390073. The reversal of 54390071 is 17009345.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54390071 is a prime.

Together with 54390073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54390073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27195035 + 27195036.

It is an arithmetic number, because the mean of its divisors is an integer number (27195036).

Almost surely, 2^54390071 is an apocalyptic number.

54390071 is a deficient number, since it is larger than the sum of its proper divisors (1).

54390071 is an equidigital number, since it uses as much as digits as its factorization.

54390071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 54390071 is about 7374.9624405823. The cubic root of 54390071 is about 378.8842409562.

The spelling of 54390071 in words is "fifty-four million, three hundred ninety thousand, seventy-one".