54819217 has 2 divisors, whose sum is σ = 54819218. Its totient is φ = 54819216.

The previous prime is 54819211. The next prime is 54819223. The reversal of 54819217 is 71291845.

It is a Cunningham number, because it is equal to 7404²+1.

It is a balanced prime because it is at equal distance from previous prime (54819211) and next prime (54819223).

It can be written as a sum of positive squares in only one way, i.e., 54819216 + 1 = 7404^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 54819217 - 2³ = 54819209 is a prime.

It is not a weakly prime, because it can be changed into another prime (54819211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27409608 + 27409609.

It is an arithmetic number, because the mean of its divisors is an integer number (27409609).

Almost surely, 2^54819217 is an apocalyptic number.

It is an amenable number.

54819217 is a deficient number, since it is larger than the sum of its proper divisors (1).

54819217 is an equidigital number, since it uses as much as digits as its factorization.

54819217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 54819217 is about 7404.0000675311. Note that the first 4 decimals coincide. The cubic root of 54819217 is about 379.8781164969.

The spelling of 54819217 in words is "fifty-four million, eight hundred nineteen thousand, two hundred seventeen".