55769999 has 2 divisors, whose sum is σ = 55770000. Its totient is φ = 55769998.

The previous prime is 55769983. The next prime is 55770007. The reversal of 55769999 is 99996755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55769999 - 2⁴ = 55769983 is a prime.

It is a super-2 number, since 2×55769999² = 6220585576920002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

55769999 is a modest number, since divided by 9999 gives 5576 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55769969) 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, 27884999 + 27885000.

It is an arithmetic number, because the mean of its divisors is an integer number (27885000).

Almost surely, 2^55769999 is an apocalyptic number.

55769999 is a deficient number, since it is larger than the sum of its proper divisors (1).

55769999 is an equidigital number, since it uses as much as digits as its factorization.

55769999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6889050, while the sum is 59.

The square root of 55769999 is about 7467.9313735465. The cubic root of 55769999 is about 382.0617367759.

The spelling of 55769999 in words is "fifty-five million, seven hundred sixty-nine thousand, nine hundred ninety-nine".