54111247 has 2 divisors, whose sum is σ = 54111248. Its totient is φ = 54111246.

The previous prime is 54111227. The next prime is 54111257. The reversal of 54111247 is 74211145.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54111247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54111227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27055623 + 27055624.

It is an arithmetic number, because the mean of its divisors is an integer number (27055624).

Almost surely, 2^54111247 is an apocalyptic number.

54111247 is a deficient number, since it is larger than the sum of its proper divisors (1).

54111247 is an equidigital number, since it uses as much as digits as its factorization.

54111247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 25.

The square root of 54111247 is about 7356.0347334688. The cubic root of 54111247 is about 378.2356969983.

The spelling of 54111247 in words is "fifty-four million, one hundred eleven thousand, two hundred forty-seven".