55861441 has 4 divisors (see below), whose sum is σ = 56236500. Its totient is φ = 55486384.

The previous prime is 55861409. The next prime is 55861447. The reversal of 55861441 is 14416855.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14416855 = 5 ⋅2883371.

It can be written as a sum of positive squares in 2 ways, for example, as 32821441 + 23040000 = 5729^2 + 4800^2 .

It is a cyclic number.

It is not a de Polignac number, because 55861441 - 2⁵ = 55861409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55861397 and 55861406.

It is not an unprimeable number, because it can be changed into a prime (55861447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187306 + ... + 187603.

It is an arithmetic number, because the mean of its divisors is an integer number (14059125).

Almost surely, 2^55861441 is an apocalyptic number.

It is an amenable number.

55861441 is a deficient number, since it is larger than the sum of its proper divisors (375059).

55861441 is a wasteful number, since it uses less digits than its factorization.

55861441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375058.

The product of its digits is 19200, while the sum is 34.

The square root of 55861441 is about 7474.0511772398. The cubic root of 55861441 is about 382.2704356765.

The spelling of 55861441 in words is "fifty-five million, eight hundred sixty-one thousand, four hundred forty-one".