524320247 has 4 divisors (see below), whose sum is σ = 571985736. Its totient is φ = 476654760.

The previous prime is 524320243. The next prime is 524320249. The reversal of 524320247 is 742023425.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 524320247 - 2² = 524320243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (524320241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23832728 + ... + 23832749.

It is an arithmetic number, because the mean of its divisors is an integer number (142996434).

Almost surely, 2^524320247 is an apocalyptic number.

524320247 is a deficient number, since it is larger than the sum of its proper divisors (47665489).

524320247 is a wasteful number, since it uses less digits than its factorization.

524320247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47665488.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 524320247 is about 22898.0402436540. The cubic root of 524320247 is about 806.3660034436.

The spelling of 524320247 in words is "five hundred twenty-four million, three hundred twenty thousand, two hundred forty-seven".