55576999 has 2 divisors, whose sum is σ = 55577000. Its totient is φ = 55576998.

The previous prime is 55576987. The next prime is 55577047. The reversal of 55576999 is 99967555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55576999 - 2¹⁵ = 55544231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55576949) 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, 27788499 + 27788500.

It is an arithmetic number, because the mean of its divisors is an integer number (27788500).

Almost surely, 2^55576999 is an apocalyptic number.

55576999 is a deficient number, since it is larger than the sum of its proper divisors (1).

55576999 is an equidigital number, since it uses as much as digits as its factorization.

55576999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3827250, while the sum is 55.

The square root of 55576999 is about 7454.9982562037. The cubic root of 55576999 is about 381.6205011020.

The spelling of 55576999 in words is "fifty-five million, five hundred seventy-six thousand, nine hundred ninety-nine".