258273761 has 2 divisors, whose sum is σ = 258273762. Its totient is φ = 258273760.

The previous prime is 258273749. The next prime is 258273773. The reversal of 258273761 is 167372852.

258273761 is nontrivially palindromic in base 9.

It is a balanced prime because it is at equal distance from previous prime (258273749) and next prime (258273773).

It can be written as a sum of positive squares in only one way, i.e., 159390625 + 98883136 = 12625^2 + 9944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258273761 is a prime.

It is not a weakly prime, because it can be changed into another prime (258273721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129136880 + 129136881.

It is an arithmetic number, because the mean of its divisors is an integer number (129136881).

Almost surely, 2^258273761 is an apocalyptic number.

It is an amenable number.

258273761 is a deficient number, since it is larger than the sum of its proper divisors (1).

258273761 is an equidigital number, since it uses as much as digits as its factorization.

258273761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 41.

The square root of 258273761 is about 16070.8979525103. The cubic root of 258273761 is about 636.8347629874.

Subtracting from 258273761 its reverse (167372852), we obtain a palindrome (90900909).

The spelling of 258273761 in words is "two hundred fifty-eight million, two hundred seventy-three thousand, seven hundred sixty-one".