983557 has 2 divisors, whose sum is σ = 983558. Its totient is φ = 983556.

The previous prime is 983533. The next prime is 983579. The reversal of 983557 is 755389.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 910116 + 73441 = 954^2 + 271^2 .

It is a cyclic number.

It is not a de Polignac number, because 983557 - 2⁷ = 983429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (983527) 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 as a sum of consecutive naturals, namely, 491778 + 491779.

It is an arithmetic number, because the mean of its divisors is an integer number (491779).

2⁹⁸³⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

983557 is a deficient number, since it is larger than the sum of its proper divisors (1).

983557 is an equidigital number, since it uses as much as digits as its factorization.

983557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 37.

The square root of 983557 is about 991.7444227219. The cubic root of 983557 is about 99.4488681166.

It can be divided in two parts, 983 and 557, that added together give a triangular number (1540 = T₅₅).

The spelling of 983557 in words is "nine hundred eighty-three thousand, five hundred fifty-seven".