55506379 has 2 divisors, whose sum is σ = 55506380. Its totient is φ = 55506378.

The previous prime is 55506371. The next prime is 55506419. The reversal of 55506379 is 97360555.

It is an a-pointer prime, because the next prime (55506419) can be obtained adding 55506379 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55506379 - 2³ = 55506371 is a prime.

It is not a weakly prime, because it can be changed into another prime (55506371) 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, 27753189 + 27753190.

It is an arithmetic number, because the mean of its divisors is an integer number (27753190).

Almost surely, 2^55506379 is an apocalyptic number.

55506379 is a deficient number, since it is larger than the sum of its proper divisors (1).

55506379 is an equidigital number, since it uses as much as digits as its factorization.

55506379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141750, while the sum is 40.

The square root of 55506379 is about 7450.2603310220. The cubic root of 55506379 is about 381.4587947414.

The spelling of 55506379 in words is "fifty-five million, five hundred six thousand, three hundred seventy-nine".