247242575 has 12 divisors (see below), whose sum is σ = 308127600. Its totient is φ = 196796160.

The previous prime is 247242563. The next prime is 247242613. The reversal of 247242575 is 575242742.

It is a happy number.

It is not a de Polignac number, because 247242575 - 2⁶ = 247242511 is a prime.

It is a super-2 number, since 2×247242575² = 122257781785261250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 19874 + ... + 29823.

It is an arithmetic number, because the mean of its divisors is an integer number (25677300).

Almost surely, 2^247242575 is an apocalyptic number.

247242575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

247242575 is a deficient number, since it is larger than the sum of its proper divisors (60885025).

247242575 is a wasteful number, since it uses less digits than its factorization.

247242575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49906 (or 49901 counting only the distinct ones).

The product of its digits is 156800, while the sum is 38.

The square root of 247242575 is about 15723.9490904798. The cubic root of 247242575 is about 627.6358652489.

The spelling of 247242575 in words is "two hundred forty-seven million, two hundred forty-two thousand, five hundred seventy-five".