528728461 has 2 divisors, whose sum is σ = 528728462. Its totient is φ = 528728460.

The previous prime is 528728449. The next prime is 528728471. The reversal of 528728461 is 164827825.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424566025 + 104162436 = 20605^2 + 10206^2 .

It is a cyclic number.

It is not a de Polignac number, because 528728461 - 2¹⁵ = 528695693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (528728471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264364230 + 264364231.

It is an arithmetic number, because the mean of its divisors is an integer number (264364231).

Almost surely, 2^528728461 is an apocalyptic number.

It is an amenable number.

528728461 is a deficient number, since it is larger than the sum of its proper divisors (1).

528728461 is an equidigital number, since it uses as much as digits as its factorization.

528728461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 43.

The square root of 528728461 is about 22994.0962205519. The cubic root of 528728461 is about 808.6195360599.

The spelling of 528728461 in words is "five hundred twenty-eight million, seven hundred twenty-eight thousand, four hundred sixty-one".