55489849 has 2 divisors, whose sum is σ = 55489850. Its totient is φ = 55489848.

The previous prime is 55489831. The next prime is 55489859. The reversal of 55489849 is 94898455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52490025 + 2999824 = 7245^2 + 1732^2 .

It is a cyclic number.

It is not a de Polignac number, because 55489849 - 2⁵ = 55489817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55489796 and 55489805.

It is not a weakly prime, because it can be changed into another prime (55489859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27744924 + 27744925.

It is an arithmetic number, because the mean of its divisors is an integer number (27744925).

Almost surely, 2^55489849 is an apocalyptic number.

It is an amenable number.

55489849 is a deficient number, since it is larger than the sum of its proper divisors (1).

55489849 is an equidigital number, since it uses as much as digits as its factorization.

55489849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 52.

The square root of 55489849 is about 7449.1508912090. The cubic root of 55489849 is about 381.4209243799.

The spelling of 55489849 in words is "fifty-five million, four hundred eighty-nine thousand, eight hundred forty-nine".