258273773 has 2 divisors, whose sum is σ = 258273774. Its totient is φ = 258273772.

The previous prime is 258273761. The next prime is 258273871. The reversal of 258273773 is 377372852.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228221449 + 30052324 = 15107^2 + 5482^2 .

It is a cyclic number.

It is not a de Polignac number, because 258273773 - 2⁶ = 258273709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258273703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129136886 + 129136887.

It is an arithmetic number, because the mean of its divisors is an integer number (129136887).

Almost surely, 2^258273773 is an apocalyptic number.

It is an amenable number.

258273773 is a deficient number, since it is larger than the sum of its proper divisors (1).

258273773 is an equidigital number, since it uses as much as digits as its factorization.

258273773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 44.

The square root of 258273773 is about 16070.8983258560. The cubic root of 258273773 is about 636.8347728504.

The spelling of 258273773 in words is "two hundred fifty-eight million, two hundred seventy-three thousand, seven hundred seventy-three".