55678849 has 2 divisors, whose sum is σ = 55678850. Its totient is φ = 55678848.

The previous prime is 55678823. The next prime is 55678871. The reversal of 55678849 is 94887655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54538225 + 1140624 = 7385^2 + 1068^2 .

It is a cyclic number.

It is not a de Polignac number, because 55678849 - 2¹⁷ = 55547777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55678796 and 55678805.

It is not a weakly prime, because it can be changed into another prime (55675849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27839424 + 27839425.

It is an arithmetic number, because the mean of its divisors is an integer number (27839425).

Almost surely, 2^55678849 is an apocalyptic number.

It is an amenable number.

55678849 is a deficient number, since it is larger than the sum of its proper divisors (1).

55678849 is an equidigital number, since it uses as much as digits as its factorization.

55678849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 52.

The square root of 55678849 is about 7461.8261169770. The cubic root of 55678849 is about 381.8534771519.

The spelling of 55678849 in words is "fifty-five million, six hundred seventy-eight thousand, eight hundred forty-nine".