247526849 has 2 divisors, whose sum is σ = 247526850. Its totient is φ = 247526848.

The previous prime is 247526821. The next prime is 247526857. The reversal of 247526849 is 948625742.

247526849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176039824 + 71487025 = 13268^2 + 8455^2 .

It is a cyclic number.

It is not a de Polignac number, because 247526849 - 2¹² = 247522753 is a prime.

It is a super-2 number, since 2×247526849² = 122539081951737602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247526809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123763424 + 123763425.

It is an arithmetic number, because the mean of its divisors is an integer number (123763425).

Almost surely, 2^247526849 is an apocalyptic number.

It is an amenable number.

247526849 is a deficient number, since it is larger than the sum of its proper divisors (1).

247526849 is an equidigital number, since it uses as much as digits as its factorization.

247526849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 47.

The square root of 247526849 is about 15732.9860166467. The cubic root of 247526849 is about 627.8763203570.

The spelling of 247526849 in words is "two hundred forty-seven million, five hundred twenty-six thousand, eight hundred forty-nine".