523648403 has 2 divisors, whose sum is σ = 523648404. Its totient is φ = 523648402.

The previous prime is 523648369. The next prime is 523648439. The reversal of 523648403 is 304846325.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 523648403 - 2¹² = 523644307 is a prime.

It is not a weakly prime, because it can be changed into another prime (523648703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261824201 + 261824202.

It is an arithmetic number, because the mean of its divisors is an integer number (261824202).

Almost surely, 2^523648403 is an apocalyptic number.

523648403 is a deficient number, since it is larger than the sum of its proper divisors (1).

523648403 is an equidigital number, since it uses as much as digits as its factorization.

523648403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 523648403 is about 22883.3652026969. The cubic root of 523648403 is about 806.0214406675.

The spelling of 523648403 in words is "five hundred twenty-three million, six hundred forty-eight thousand, four hundred three".