55831613 has 8 divisors (see below), whose sum is σ = 56448000. Its totient is φ = 55218240.

The previous prime is 55831561. The next prime is 55831663. The reversal of 55831613 is 31613855.

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 55831613 - 2¹² = 55827517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55831613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55831663) 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, 62933 + ... + 63813.

It is an arithmetic number, because the mean of its divisors is an integer number (7056000).

Almost surely, 2^55831613 is an apocalyptic number.

It is an amenable number.

55831613 is a deficient number, since it is larger than the sum of its proper divisors (616387).

55831613 is a wasteful number, since it uses less digits than its factorization.

55831613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507.

The product of its digits is 10800, while the sum is 32.

The square root of 55831613 is about 7472.0554735628. The cubic root of 55831613 is about 382.2023840090.

The spelling of 55831613 in words is "fifty-five million, eight hundred thirty-one thousand, six hundred thirteen".