55858591 has 8 divisors (see below), whose sum is σ = 57481424. Its totient is φ = 54250560.

The previous prime is 55858589. The next prime is 55858603. The reversal of 55858591 is 19585855.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55858591 - 2¹ = 55858589 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 (55858511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4195 + ... + 11371.

It is an arithmetic number, because the mean of its divisors is an integer number (7185178).

Almost surely, 2^55858591 is an apocalyptic number.

55858591 is a deficient number, since it is larger than the sum of its proper divisors (1622833).

55858591 is a wasteful number, since it uses less digits than its factorization.

55858591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7401.

The product of its digits is 360000, while the sum is 46.

The square root of 55858591 is about 7473.8605151555. The cubic root of 55858591 is about 382.2639345358.

The spelling of 55858591 in words is "fifty-five million, eight hundred fifty-eight thousand, five hundred ninety-one".