55858959 has 48 divisors (see below), whose sum is σ = 91334880. Its totient is φ = 32659200.

The previous prime is 55858949. The next prime is 55858961. The reversal of 55858959 is 95985855.

55858959 is a `hidden beast` number, since 5 + 5 + 8 + 589 + 59 = 666.

It is not a de Polignac number, because 55858959 - 2¹⁵ = 55826191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55858939) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 342612 + ... + 342774.

It is an arithmetic number, because the mean of its divisors is an integer number (1902810).

Almost surely, 2^55858959 is an apocalyptic number.

55858959 is a deficient number, since it is larger than the sum of its proper divisors (35475921).

55858959 is a wasteful number, since it uses less digits than its factorization.

55858959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 309 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 54.

The square root of 55858959 is about 7473.8851342525. The cubic root of 55858959 is about 382.2647739938.

The spelling of 55858959 in words is "fifty-five million, eight hundred fifty-eight thousand, nine hundred fifty-nine".