528774247 has 2 divisors, whose sum is σ = 528774248. Its totient is φ = 528774246.

The previous prime is 528774241. The next prime is 528774263. The reversal of 528774247 is 742477825.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-528774247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 528774197 and 528774206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (528774241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264387123 + 264387124.

It is an arithmetic number, because the mean of its divisors is an integer number (264387124).

Almost surely, 2^528774247 is an apocalyptic number.

528774247 is a deficient number, since it is larger than the sum of its proper divisors (1).

528774247 is an equidigital number, since it uses as much as digits as its factorization.

528774247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 878080, while the sum is 46.

The square root of 528774247 is about 22995.0918023825. The cubic root of 528774247 is about 808.6428765759.

The spelling of 528774247 in words is "five hundred twenty-eight million, seven hundred seventy-four thousand, two hundred forty-seven".