551057 has 16 divisors (see below), whose sum is σ = 658560. Its totient is φ = 456192.

The previous prime is 551039. The next prime is 551059. The reversal of 551057 is 750155.

It is a cyclic number.

It is not a de Polignac number, because 551057 - 2⁶ = 550993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5633 + ... + 5729.

It is an arithmetic number, because the mean of its divisors is an integer number (41160).

2⁵⁵¹⁰⁵⁷ is an apocalyptic number.

It is an amenable number.

551057 is a deficient number, since it is larger than the sum of its proper divisors (107503).

551057 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (551056) it forms an eRAP, since the sums of their prime factors are consecutive (151 and 152).

551057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152.

The product of its (nonzero) digits is 875, while the sum is 23.

The square root of 551057 is about 742.3321359068. The cubic root of 551057 is about 81.9845796901.

The spelling of 551057 in words is "five hundred fifty-one thousand, fifty-seven".