2547000247 has 4 divisors (see below), whose sum is σ = 2778545736. Its totient is φ = 2315454760.

The previous prime is 2547000241. The next prime is 2547000251. The reversal of 2547000247 is 7420007452.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2547000247 is a prime.

It is a super-2 number, since 2×2547000247² = 12974420516436122018, 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 (2547000241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115772728 + ... + 115772749.

It is an arithmetic number, because the mean of its divisors is an integer number (694636434).

Almost surely, 2^2547000247 is an apocalyptic number.

2547000247 is a deficient number, since it is larger than the sum of its proper divisors (231545489).

2547000247 is a wasteful number, since it uses less digits than its factorization.

2547000247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231545488.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 2547000247 is about 50467.8139708864. The cubic root of 2547000247 is about 1365.6612783413.

Adding to 2547000247 its reverse (7420007452), we get a palindrome (9967007699).

The spelling of 2547000247 in words is "two billion, five hundred forty-seven million, two hundred forty-seven", and thus it is an aban number.