5571551 has 4 divisors (see below), whose sum is σ = 5577192. Its totient is φ = 5565912.

The previous prime is 5571539. The next prime is 5571607. The reversal of 5571551 is 1551755.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 5571551 - 2⁶ = 5571487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5571151) 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 3 ways as a sum of consecutive naturals, for example, 905 + ... + 3458.

It is an arithmetic number, because the mean of its divisors is an integer number (1394298).

Almost surely, 2^5571551 is an apocalyptic number.

5571551 is a deficient number, since it is larger than the sum of its proper divisors (5641).

5571551 is a wasteful number, since it uses less digits than its factorization.

5571551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5640.

The product of its digits is 4375, while the sum is 29.

The square root of 5571551 is about 2360.4133112656. The cubic root of 5571551 is about 177.2795756205.

The spelling of 5571551 in words is "five million, five hundred seventy-one thousand, five hundred fifty-one".