55587029 has 2 divisors, whose sum is σ = 55587030. Its totient is φ = 55587028.

The previous prime is 55587017. The next prime is 55587031. The reversal of 55587029 is 92078555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54316900 + 1270129 = 7370^2 + 1127^2 .

It is a cyclic number.

It is not a de Polignac number, because 55587029 - 2⁴ = 55587013 is a prime.

Together with 55587031, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55583029) 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, 27793514 + 27793515.

It is an arithmetic number, because the mean of its divisors is an integer number (27793515).

Almost surely, 2^55587029 is an apocalyptic number.

It is an amenable number.

55587029 is a deficient number, since it is larger than the sum of its proper divisors (1).

55587029 is an equidigital number, since it uses as much as digits as its factorization.

55587029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 41.

The square root of 55587029 is about 7455.6709288970. The cubic root of 55587029 is about 381.6434567818.

The spelling of 55587029 in words is "fifty-five million, five hundred eighty-seven thousand, twenty-nine".