55591659 has 12 divisors (see below), whose sum is σ = 80812576. Its totient is φ = 36824112.

The previous prime is 55591633. The next prime is 55591681. The reversal of 55591659 is 95619555.

55591659 is a `hidden beast` number, since 5 + 5 + 591 + 6 + 59 = 666.

It is not a de Polignac number, because 55591659 - 2¹³ = 55583467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55591609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18259 + ... + 21084.

Almost surely, 2^55591659 is an apocalyptic number.

55591659 is a deficient number, since it is larger than the sum of its proper divisors (25220917).

55591659 is a wasteful number, since it uses less digits than its factorization.

55591659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39506 (or 39503 counting only the distinct ones).

The product of its digits is 303750, while the sum is 45.

The square root of 55591659 is about 7455.9814243331. The cubic root of 55591659 is about 381.6540525400.

The spelling of 55591659 in words is "fifty-five million, five hundred ninety-one thousand, six hundred fifty-nine".