54557147 has 2 divisors, whose sum is σ = 54557148. Its totient is φ = 54557146.

The previous prime is 54557137. The next prime is 54557159. The reversal of 54557147 is 74175545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54557147 - 2²² = 50362843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54557147.

It is not a weakly prime, because it can be changed into another prime (54557137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27278573 + 27278574.

It is an arithmetic number, because the mean of its divisors is an integer number (27278574).

Almost surely, 2^54557147 is an apocalyptic number.

54557147 is a deficient number, since it is larger than the sum of its proper divisors (1).

54557147 is an equidigital number, since it uses as much as digits as its factorization.

54557147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98000, while the sum is 38.

The square root of 54557147 is about 7386.2809992580. The cubic root of 54557147 is about 379.2717979431.

The spelling of 54557147 in words is "fifty-four million, five hundred fifty-seven thousand, one hundred forty-seven".