5557551 has 8 divisors (see below), whose sum is σ = 7460400. Its totient is φ = 3679872.

The previous prime is 5557547. The next prime is 5557553. The reversal of 5557551 is 1557555.

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

It is not a de Polignac number, because 5557551 - 2² = 5557547 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5557553) 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 7 ways as a sum of consecutive naturals, for example, 5770 + ... + 6663.

It is an arithmetic number, because the mean of its divisors is an integer number (932550).

Almost surely, 2^5557551 is an apocalyptic number.

5557551 is a deficient number, since it is larger than the sum of its proper divisors (1902849).

5557551 is a wasteful number, since it uses less digits than its factorization.

5557551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12585.

The product of its digits is 21875, while the sum is 33.

The square root of 5557551 is about 2357.4458636414. The cubic root of 5557551 is about 177.1309637535.

The spelling of 5557551 in words is "five million, five hundred fifty-seven thousand, five hundred fifty-one".