55394849 has 2 divisors, whose sum is σ = 55394850. Its totient is φ = 55394848.

The previous prime is 55394837. The next prime is 55394851. The reversal of 55394849 is 94849355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28944400 + 26450449 = 5380^2 + 5143^2 .

It is a cyclic number.

It is not a de Polignac number, because 55394849 - 2²⁰ = 54346273 is a prime.

It is a Sophie Germain prime.

Together with 55394851, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (55394819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27697424 + 27697425.

It is an arithmetic number, because the mean of its divisors is an integer number (27697425).

Almost surely, 2^55394849 is an apocalyptic number.

It is an amenable number.

55394849 is a deficient number, since it is larger than the sum of its proper divisors (1).

55394849 is an equidigital number, since it uses as much as digits as its factorization.

55394849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 777600, while the sum is 47.

The square root of 55394849 is about 7442.7715939695. The cubic root of 55394849 is about 381.2031326783.

The spelling of 55394849 in words is "fifty-five million, three hundred ninety-four thousand, eight hundred forty-nine".