557551 has 2 divisors, whose sum is σ = 557552. Its totient is φ = 557550.

The previous prime is 557537. The next prime is 557567. The reversal of 557551 is 155755.

557551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 557551 - 2⁵ = 557519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278775 + 278776.

It is an arithmetic number, because the mean of its divisors is an integer number (278776).

2⁵⁵⁷⁵⁵¹ is an apocalyptic number.

557551 is a deficient number, since it is larger than the sum of its proper divisors (1).

557551 is an equidigital number, since it uses as much as digits as its factorization.

557551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4375, while the sum is 28.

The square root of 557551 is about 746.6933774984. The cubic root of 557551 is about 82.3053753231.

The spelling of 557551 in words is "five hundred fifty-seven thousand, five hundred fifty-one".