553980521 has 2 divisors, whose sum is σ = 553980522. Its totient is φ = 553980520.

The previous prime is 553980517. The next prime is 553980523. The reversal of 553980521 is 125089355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389628121 + 164352400 = 19739^2 + 12820^2 .

It is a cyclic number.

It is not a de Polignac number, because 553980521 - 2² = 553980517 is a prime.

Together with 553980523, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_29043497 and since 553980521 and 29043497 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (553980523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276990260 + 276990261.

It is an arithmetic number, because the mean of its divisors is an integer number (276990261).

Almost surely, 2^553980521 is an apocalyptic number.

It is an amenable number.

553980521 is a deficient number, since it is larger than the sum of its proper divisors (1).

553980521 is an equidigital number, since it uses as much as digits as its factorization.

553980521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 38.

The square root of 553980521 is about 23536.7907965381. The cubic root of 553980521 is about 821.2930822754.

The spelling of 553980521 in words is "five hundred fifty-three million, nine hundred eighty thousand, five hundred twenty-one".