247465513 has 2 divisors, whose sum is σ = 247465514. Its totient is φ = 247465512.

The previous prime is 247465433. The next prime is 247465523. The reversal of 247465513 is 315564742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146603664 + 100861849 = 12108^2 + 10043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-247465513 is a prime.

It is a super-2 number, since 2×247465513² = 122478360248706338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (247465523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123732756 + 123732757.

It is an arithmetic number, because the mean of its divisors is an integer number (123732757).

Almost surely, 2^247465513 is an apocalyptic number.

It is an amenable number.

247465513 is a deficient number, since it is larger than the sum of its proper divisors (1).

247465513 is an equidigital number, since it uses as much as digits as its factorization.

247465513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 37.

The square root of 247465513 is about 15731.0366155572. The cubic root of 247465513 is about 627.8244544637.

The spelling of 247465513 in words is "two hundred forty-seven million, four hundred sixty-five thousand, five hundred thirteen".