55429657 has 2 divisors, whose sum is σ = 55429658. Its totient is φ = 55429656.

The previous prime is 55429613. The next prime is 55429697. The reversal of 55429657 is 75692455.

55429657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46090521 + 9339136 = 6789^2 + 3056^2 .

It is a cyclic number.

It is not a de Polignac number, because 55429657 - 2⁷ = 55429529 is a prime.

It is not a weakly prime, because it can be changed into another prime (55429607) 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, 27714828 + 27714829.

It is an arithmetic number, because the mean of its divisors is an integer number (27714829).

Almost surely, 2^55429657 is an apocalyptic number.

It is an amenable number.

55429657 is a deficient number, since it is larger than the sum of its proper divisors (1).

55429657 is an equidigital number, since it uses as much as digits as its factorization.

55429657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378000, while the sum is 43.

The square root of 55429657 is about 7445.1096029541. The cubic root of 55429657 is about 381.2829604398.

The spelling of 55429657 in words is "fifty-five million, four hundred twenty-nine thousand, six hundred fifty-seven".