54866849 has 2 divisors, whose sum is σ = 54866850. Its totient is φ = 54866848.

The previous prime is 54866827. The next prime is 54866863. The reversal of 54866849 is 94866845.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35224225 + 19642624 = 5935^2 + 4432^2 .

It is a cyclic number.

It is not a de Polignac number, because 54866849 - 2²⁰ = 53818273 is a prime.

It is a super-2 number, since 2×54866849² = 6020742238377602, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 54866797 and 54866806.

It is not a weakly prime, because it can be changed into another prime (54866549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27433424 + 27433425.

It is an arithmetic number, because the mean of its divisors is an integer number (27433425).

Almost surely, 2^54866849 is an apocalyptic number.

It is an amenable number.

54866849 is a deficient number, since it is larger than the sum of its proper divisors (1).

54866849 is an equidigital number, since it uses as much as digits as its factorization.

54866849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 50.

The square root of 54866849 is about 7407.2160087309. The cubic root of 54866849 is about 379.9881090462.

The spelling of 54866849 in words is "fifty-four million, eight hundred sixty-six thousand, eight hundred forty-nine".