55159831 has 8 divisors (see below), whose sum is σ = 58342400. Its totient is φ = 52005240.

The previous prime is 55159807. The next prime is 55159843. The reversal of 55159831 is 13895155.

55159831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55159831 - 2⁷ = 55159703 is a prime.

It is a super-2 number, since 2×55159831² = 6085213911897122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55159861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2871 + ... + 10888.

It is an arithmetic number, because the mean of its divisors is an integer number (7292800).

Almost surely, 2^55159831 is an apocalyptic number.

55159831 is a deficient number, since it is larger than the sum of its proper divisors (3182569).

55159831 is a wasteful number, since it uses less digits than its factorization.

55159831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13989.

The product of its digits is 27000, while the sum is 37.

The square root of 55159831 is about 7426.9664736015. The cubic root of 55159831 is about 380.6632714431.

The spelling of 55159831 in words is "fifty-five million, one hundred fifty-nine thousand, eight hundred thirty-one".