5551971 has 16 divisors (see below), whose sum is σ = 7843200. Its totient is φ = 3483648.

The previous prime is 5551967. The next prime is 5551981. The reversal of 5551971 is 1791555.

It is not a de Polignac number, because 5551971 - 2² = 5551967 is a prime.

5551971 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5551921) 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 15 ways as a sum of consecutive naturals, for example, 14460 + ... + 14838.

It is an arithmetic number, because the mean of its divisors is an integer number (490200).

Almost surely, 2^5551971 is an apocalyptic number.

5551971 is a deficient number, since it is larger than the sum of its proper divisors (2291229).

5551971 is a wasteful number, since it uses less digits than its factorization.

5551971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658.

The product of its digits is 7875, while the sum is 33.

The square root of 5551971 is about 2356.2620821971. The cubic root of 5551971 is about 177.0716617482.

The spelling of 5551971 in words is "five million, five hundred fifty-one thousand, nine hundred seventy-one".