258285061 has 2 divisors, whose sum is σ = 258285062. Its totient is φ = 258285060.

The previous prime is 258285043. The next prime is 258285077. The reversal of 258285061 is 160582852.

258285061 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., 255008961 + 3276100 = 15969^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 258285061 - 2²³ = 249896453 is a prime.

It is a super-2 number, since 2×258285061² = 133422345471547442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 258285061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258285161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129142530 + 129142531.

It is an arithmetic number, because the mean of its divisors is an integer number (129142531).

Almost surely, 2^258285061 is an apocalyptic number.

It is an amenable number.

258285061 is a deficient number, since it is larger than the sum of its proper divisors (1).

258285061 is an equidigital number, since it uses as much as digits as its factorization.

258285061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 258285061 is about 16071.2495158279. The cubic root of 258285061 is about 636.8440504555.

The spelling of 258285061 in words is "two hundred fifty-eight million, two hundred eighty-five thousand, sixty-one".