980557 has 2 divisors, whose sum is σ = 980558. Its totient is φ = 980556.

The previous prime is 980549. The next prime is 980579. The reversal of 980557 is 755089.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 835396 + 145161 = 914^2 + 381^2 .

It is a cyclic number.

It is not a de Polignac number, because 980557 - 2³ = 980549 is a prime.

It is a super-2 number, since 2×980557² = 1922984060498, which contains 22 as substring.

It is an Ulam number.

980557 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980587) 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, 490278 + 490279.

It is an arithmetic number, because the mean of its divisors is an integer number (490279).

2⁹⁸⁰⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

980557 is a deficient number, since it is larger than the sum of its proper divisors (1).

980557 is an equidigital number, since it uses as much as digits as its factorization.

980557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 980557 is about 990.2307811818. The cubic root of 980557 is about 99.3476536967.

The spelling of 980557 in words is "nine hundred eighty thousand, five hundred fifty-seven".