55805258 has 8 divisors (see below), whose sum is σ = 83758752. Its totient is φ = 27885676.

The previous prime is 55805249. The next prime is 55805293. The reversal of 55805258 is 85250855.

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

It is a super-2 number, since 2×55805258² = 6228453640893128, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3860 + ... + 11247.

It is an arithmetic number, because the mean of its divisors is an integer number (10469844).

Almost surely, 2^55805258 is an apocalyptic number.

55805258 is a deficient number, since it is larger than the sum of its proper divisors (27953494).

55805258 is a wasteful number, since it uses less digits than its factorization.

55805258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16956.

The product of its (nonzero) digits is 80000, while the sum is 38.

The square root of 55805258 is about 7470.2916944387. The cubic root of 55805258 is about 382.1422357127.

The spelling of 55805258 in words is "fifty-five million, eight hundred five thousand, two hundred fifty-eight".