55805959 has 16 divisors (see below), whose sum is σ = 62853120. Its totient is φ = 49109760.

The previous prime is 55805941. The next prime is 55805969. The reversal of 55805959 is 95950855.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 55805959 - 2⁹ = 55805447 is a prime.

It is a super-2 number, since 2×55805959² = 6228610119819362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55805969) 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 in 15 ways as a sum of consecutive naturals, for example, 59607 + ... + 60535.

It is an arithmetic number, because the mean of its divisors is an integer number (3928320).

Almost surely, 2^55805959 is an apocalyptic number.

55805959 is a deficient number, since it is larger than the sum of its proper divisors (7047161).

55805959 is a wasteful number, since it uses less digits than its factorization.

55805959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110.

The product of its (nonzero) digits is 405000, while the sum is 46.

The square root of 55805959 is about 7470.3386134766. The cubic root of 55805959 is about 382.1438358043.

Subtracting 55805959 from its reverse (95950855), we obtain a square (40144896 = 6336²).

The spelling of 55805959 in words is "fifty-five million, eight hundred five thousand, nine hundred fifty-nine".