523448647 has 2 divisors, whose sum is σ = 523448648. Its totient is φ = 523448646.

The previous prime is 523448593. The next prime is 523448659. The reversal of 523448647 is 746844325.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-523448647 is a prime.

It is a super-2 number, since 2×523448647² = 547996972092261218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (523448677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261724323 + 261724324.

It is an arithmetic number, because the mean of its divisors is an integer number (261724324).

Almost surely, 2^523448647 is an apocalyptic number.

523448647 is a deficient number, since it is larger than the sum of its proper divisors (1).

523448647 is an equidigital number, since it uses as much as digits as its factorization.

523448647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 43.

The square root of 523448647 is about 22879.0001311246. Note that the first 3 decimals coincide. The cubic root of 523448647 is about 805.9189367129.

The spelling of 523448647 in words is "five hundred twenty-three million, four hundred forty-eight thousand, six hundred forty-seven".