556957 has 2 divisors, whose sum is σ = 556958. Its totient is φ = 556956.

The previous prime is 556943. The next prime is 556967. The reversal of 556957 is 759655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 556516 + 441 = 746^2 + 21^2 .

It is a cyclic number.

It is not a de Polignac number, because 556957 - 2¹⁵ = 524189 is a prime.

556957 is a lucky number.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556967) 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 as a sum of consecutive naturals, namely, 278478 + 278479.

It is an arithmetic number, because the mean of its divisors is an integer number (278479).

2⁵⁵⁶⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

556957 is a deficient number, since it is larger than the sum of its proper divisors (1).

556957 is an equidigital number, since it uses as much as digits as its factorization.

556957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47250, while the sum is 37.

The square root of 556957 is about 746.2955178748. The cubic root of 556957 is about 82.2761362848.

The spelling of 556957 in words is "five hundred fifty-six thousand, nine hundred fifty-seven".