553478521 has 2 divisors, whose sum is σ = 553478522. Its totient is φ = 553478520.

The previous prime is 553478507. The next prime is 553478539. The reversal of 553478521 is 125874355.

It is the 9605-th star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442471225 + 111007296 = 21035^2 + 10536^2 .

It is a cyclic number.

It is not a de Polignac number, because 553478521 - 2⁵ = 553478489 is a prime.

It is not a weakly prime, because it can be changed into another prime (553475521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276739260 + 276739261.

It is an arithmetic number, because the mean of its divisors is an integer number (276739261).

Almost surely, 2^553478521 is an apocalyptic number.

It is an amenable number.

553478521 is a deficient number, since it is larger than the sum of its proper divisors (1).

553478521 is an equidigital number, since it uses as much as digits as its factorization.

553478521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168000, while the sum is 40.

The square root of 553478521 is about 23526.1242239345. The cubic root of 553478521 is about 821.0449305150.

The spelling of 553478521 in words is "five hundred fifty-three million, four hundred seventy-eight thousand, five hundred twenty-one".