55471649 has 2 divisors, whose sum is σ = 55471650. Its totient is φ = 55471648.

The previous prime is 55471627. The next prime is 55471687. The reversal of 55471649 is 94617455.

55471649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39150049 + 16321600 = 6257^2 + 4040^2 .

It is a cyclic number.

It is not a de Polignac number, because 55471649 - 2¹² = 55467553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55474649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27735824 + 27735825.

It is an arithmetic number, because the mean of its divisors is an integer number (27735825).

Almost surely, 2^55471649 is an apocalyptic number.

It is an amenable number.

55471649 is a deficient number, since it is larger than the sum of its proper divisors (1).

55471649 is an equidigital number, since it uses as much as digits as its factorization.

55471649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 41.

The square root of 55471649 is about 7447.9291752809. The cubic root of 55471649 is about 381.3792193351.

The spelling of 55471649 in words is "fifty-five million, four hundred seventy-one thousand, six hundred forty-nine".