55841861 has 16 divisors (see below), whose sum is σ = 59957760. Its totient is φ = 51891840.

The previous prime is 55841839. The next prime is 55841873. The reversal of 55841861 is 16814855.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55841861 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55841801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132431 + ... + 132851.

It is an arithmetic number, because the mean of its divisors is an integer number (3747360).

Almost surely, 2^55841861 is an apocalyptic number.

It is an amenable number.

55841861 is a deficient number, since it is larger than the sum of its proper divisors (4115899).

55841861 is a wasteful number, since it uses less digits than its factorization.

55841861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596.

The product of its digits is 38400, while the sum is 38.

The square root of 55841861 is about 7472.7411971779. The cubic root of 55841861 is about 382.2257672393.

The spelling of 55841861 in words is "fifty-five million, eight hundred forty-one thousand, eight hundred sixty-one".