258212106 has 12 divisors (see below), whose sum is σ = 559459602. Its totient is φ = 86070696.

The previous prime is 258212063. The next prime is 258212111. The reversal of 258212106 is 601212852.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 252523881 + 5688225 = 15891^2 + 2385^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 258212106.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7172541 + ... + 7172576.

Almost surely, 2^258212106 is an apocalyptic number.

258212106 is an abundant number, since it is smaller than the sum of its proper divisors (301247496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258212106 is a wasteful number, since it uses less digits than its factorization.

258212106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14345125 (or 14345122 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 258212106 is about 16068.9796191295. The cubic root of 258212106 is about 636.7840839819.

Adding to 258212106 its reverse (601212852), we get a palindrome (859424958).

The spelling of 258212106 in words is "two hundred fifty-eight million, two hundred twelve thousand, one hundred six".