5551857 has 12 divisors (see below), whose sum is σ = 8441680. Its totient is φ = 3506328.

The previous prime is 5551853. The next prime is 5551867. The reversal of 5551857 is 7581555.

It is not a de Polignac number, because 5551857 - 2² = 5551853 is a prime.

It is a super-2 number, since 2×5551857² = 61646232296898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5551853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16063 + ... + 16404.

Almost surely, 2^5551857 is an apocalyptic number.

5551857 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

5551857 is a deficient number, since it is larger than the sum of its proper divisors (2889823).

5551857 is a wasteful number, since it uses less digits than its factorization.

5551857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32492 (or 32489 counting only the distinct ones).

The product of its digits is 35000, while the sum is 36.

The square root of 5551857 is about 2356.2378912156. The cubic root of 5551857 is about 177.0704497878.

The spelling of 5551857 in words is "five million, five hundred fifty-one thousand, eight hundred fifty-seven".