54881147 has 2 divisors, whose sum is σ = 54881148. Its totient is φ = 54881146.

The previous prime is 54881143. The next prime is 54881149. The reversal of 54881147 is 74118845.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54881147 - 2² = 54881143 is a prime.

Together with 54881149, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54881147.

It is not a weakly prime, because it can be changed into another prime (54881143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27440573 + 27440574.

It is an arithmetic number, because the mean of its divisors is an integer number (27440574).

Almost surely, 2^54881147 is an apocalyptic number.

54881147 is a deficient number, since it is larger than the sum of its proper divisors (1).

54881147 is an equidigital number, since it uses as much as digits as its factorization.

54881147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35840, while the sum is 38.

The square root of 54881147 is about 7408.1810857997. The cubic root of 54881147 is about 380.0211137853.

The spelling of 54881147 in words is "fifty-four million, eight hundred eighty-one thousand, one hundred forty-seven".