55395649 has 2 divisors, whose sum is σ = 55395650. Its totient is φ = 55395648.

The previous prime is 55395619. The next prime is 55395677. The reversal of 55395649 is 94659355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41370624 + 14025025 = 6432^2 + 3745^2 .

It is a cyclic number.

It is not a de Polignac number, because 55395649 - 2⁵ = 55395617 is a prime.

It is a super-3 number, since 3×55395649³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55395599 and 55395608.

It is not a weakly prime, because it can be changed into another prime (55395619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27697824 + 27697825.

It is an arithmetic number, because the mean of its divisors is an integer number (27697825).

Almost surely, 2^55395649 is an apocalyptic number.

It is an amenable number.

55395649 is a deficient number, since it is larger than the sum of its proper divisors (1).

55395649 is an equidigital number, since it uses as much as digits as its factorization.

55395649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 729000, while the sum is 46.

The square root of 55395649 is about 7442.8253371955. The cubic root of 55395649 is about 381.2049677529.

The spelling of 55395649 in words is "fifty-five million, three hundred ninety-five thousand, six hundred forty-nine".