258278061 has 8 divisors (see below), whose sum is σ = 345711744. Its totient is φ = 171514880.

The previous prime is 258278047. The next prime is 258278071. The reversal of 258278061 is 160872852.

258278061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 258278061 - 2⁵ = 258278029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258278071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166725 + ... + 168266.

It is an arithmetic number, because the mean of its divisors is an integer number (43213968).

Almost surely, 2^258278061 is an apocalyptic number.

It is an amenable number.

258278061 is a deficient number, since it is larger than the sum of its proper divisors (87433683).

258278061 is a wasteful number, since it uses less digits than its factorization.

258278061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335251.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 258278061 is about 16071.0317341482. The cubic root of 258278061 is about 636.8382971886.

The spelling of 258278061 in words is "two hundred fifty-eight million, two hundred seventy-eight thousand, sixty-one".