258117653 has 2 divisors, whose sum is σ = 258117654. Its totient is φ = 258117652.

The previous prime is 258117649. The next prime is 258117659. The reversal of 258117653 is 356711852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240157009 + 17960644 = 15497^2 + 4238^2 .

It is a cyclic number.

It is not a de Polignac number, because 258117653 - 2² = 258117649 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258117659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129058826 + 129058827.

It is an arithmetic number, because the mean of its divisors is an integer number (129058827).

Almost surely, 2^258117653 is an apocalyptic number.

It is an amenable number.

258117653 is a deficient number, since it is larger than the sum of its proper divisors (1).

258117653 is an equidigital number, since it uses as much as digits as its factorization.

258117653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 38.

The square root of 258117653 is about 16066.0403646947. The cubic root of 258117653 is about 636.7064301192.

The spelling of 258117653 in words is "two hundred fifty-eight million, one hundred seventeen thousand, six hundred fifty-three".