55553629 has 2 divisors, whose sum is σ = 55553630. Its totient is φ = 55553628.

The previous prime is 55553627. The next prime is 55553639. The reversal of 55553629 is 92635555.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37491129 + 18062500 = 6123^2 + 4250^2 .

It is a cyclic number.

It is not a de Polignac number, because 55553629 - 2¹ = 55553627 is a prime.

Together with 55553627, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 55553591 and 55553600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55553621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27776814 + 27776815.

It is an arithmetic number, because the mean of its divisors is an integer number (27776815).

Almost surely, 2^55553629 is an apocalyptic number.

It is an amenable number.

55553629 is a deficient number, since it is larger than the sum of its proper divisors (1).

55553629 is an equidigital number, since it uses as much as digits as its factorization.

55553629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 202500, while the sum is 40.

The square root of 55553629 is about 7453.4306866033. The cubic root of 55553629 is about 381.5670034223.

The spelling of 55553629 in words is "fifty-five million, five hundred fifty-three thousand, six hundred twenty-nine".