55809158 has 8 divisors (see below), whose sum is σ = 83883000. Its totient is φ = 27848160.

The previous prime is 55809133. The next prime is 55809197. The reversal of 55809158 is 85190855.

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

It is a super-2 number, since 2×55809158² = 6229324233337928, which contains 22 as substring.

It is a congruent 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, 26963 + ... + 28958.

It is an arithmetic number, because the mean of its divisors is an integer number (10485375).

Almost surely, 2^55809158 is an apocalyptic number.

55809158 is a deficient number, since it is larger than the sum of its proper divisors (28073842).

55809158 is a wasteful number, since it uses less digits than its factorization.

55809158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56422.

The product of its (nonzero) digits is 72000, while the sum is 41.

The square root of 55809158 is about 7470.5527238619. The cubic root of 55809158 is about 382.1511376218.

The spelling of 55809158 in words is "fifty-five million, eight hundred nine thousand, one hundred fifty-eight".