55856291 has 4 divisors (see below), whose sum is σ = 57782400. Its totient is φ = 53930184.

The previous prime is 55856267. The next prime is 55856293. The reversal of 55856291 is 19265855.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55856291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55856293) 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, 963011 + ... + 963068.

It is an arithmetic number, because the mean of its divisors is an integer number (14445600).

Almost surely, 2^55856291 is an apocalyptic number.

55856291 is a deficient number, since it is larger than the sum of its proper divisors (1926109).

55856291 is a wasteful number, since it uses less digits than its factorization.

55856291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926108.

The product of its digits is 108000, while the sum is 41.

The square root of 55856291 is about 7473.7066439619. The cubic root of 55856291 is about 382.2586878399.

The spelling of 55856291 in words is "fifty-five million, eight hundred fifty-six thousand, two hundred ninety-one".