55769983 has 2 divisors, whose sum is σ = 55769984. Its totient is φ = 55769982.

The previous prime is 55769977. The next prime is 55769999. The reversal of 55769983 is 38996755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55769983 - 2⁵ = 55769951 is a prime.

It is a super-2 number, since 2×55769983² = 6220582007640578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55769983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55769953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27884991 + 27884992.

It is an arithmetic number, because the mean of its divisors is an integer number (27884992).

Almost surely, 2^55769983 is an apocalyptic number.

55769983 is a deficient number, since it is larger than the sum of its proper divisors (1).

55769983 is an equidigital number, since it uses as much as digits as its factorization.

55769983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 52.

The square root of 55769983 is about 7467.9303022993. The cubic root of 55769983 is about 382.0617002390.

The spelling of 55769983 in words is "fifty-five million, seven hundred sixty-nine thousand, nine hundred eighty-three".