5521857 has 8 divisors (see below), whose sum is σ = 8031840. Its totient is φ = 3346560.

The previous prime is 5521819. The next prime is 5521891. The reversal of 5521857 is 7581255.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5521857 - 2⁷ = 5521729 is a prime.

It is a super-3 number, since 3×5521857³ (a number of 21 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 167329 = 5521857 / (5 + 5 + 2 + 1 + 8 + 5 + 7).

It is not an unprimeable number, because it can be changed into a prime (5521807) 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, 83632 + ... + 83697.

It is an arithmetic number, because the mean of its divisors is an integer number (1003980).

Almost surely, 2^5521857 is an apocalyptic number.

It is an amenable number.

5521857 is a deficient number, since it is larger than the sum of its proper divisors (2509983).

5521857 is a wasteful number, since it uses less digits than its factorization.

5521857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167343.

The product of its digits is 14000, while the sum is 33.

The square root of 5521857 is about 2349.8631875069. The cubic root of 5521857 is about 176.7509344439.

It can be divided in two parts, 55 and 21857, that added together give a palindrome (21912).

The spelling of 5521857 in words is "five million, five hundred twenty-one thousand, eight hundred fifty-seven".