247253287 has 8 divisors (see below), whose sum is σ = 262039536. Its totient is φ = 232493952.

The previous prime is 247253269. The next prime is 247253341. The reversal of 247253287 is 782352742.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247253287 is a prime.

It is a super-2 number, since 2×247253287² = 122268375864608738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247253207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14053 + ... + 26305.

It is an arithmetic number, because the mean of its divisors is an integer number (32754942).

Almost surely, 2^247253287 is an apocalyptic number.

247253287 is a deficient number, since it is larger than the sum of its proper divisors (14786249).

247253287 is a wasteful number, since it uses less digits than its factorization.

247253287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13457.

The product of its digits is 188160, while the sum is 40.

The square root of 247253287 is about 15724.2897136882. The cubic root of 247253287 is about 627.6449294083.

The spelling of 247253287 in words is "two hundred forty-seven million, two hundred fifty-three thousand, two hundred eighty-seven".