55605959 has 4 divisors (see below), whose sum is σ = 55621104. Its totient is φ = 55590816.

The previous prime is 55605941. The next prime is 55606003. The reversal of 55605959 is 95950655.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55605959 - 2⁸ = 55605703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55605919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1814 + ... + 10700.

It is an arithmetic number, because the mean of its divisors is an integer number (13905276).

Almost surely, 2^55605959 is an apocalyptic number.

55605959 is a deficient number, since it is larger than the sum of its proper divisors (15145).

55605959 is an equidigital number, since it uses as much as digits as its factorization.

55605959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15144.

The product of its (nonzero) digits is 303750, while the sum is 44.

The square root of 55605959 is about 7456.9403242885. The cubic root of 55605959 is about 381.6867743856.

The spelling of 55605959 in words is "fifty-five million, six hundred five thousand, nine hundred fifty-nine".