258378017 has 8 divisors (see below), whose sum is σ = 275808960. Its totient is φ = 241330320.

The previous prime is 258378011. The next prime is 258378031. The reversal of 258378017 is 710873852.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258378017 is a prime.

It is a super-3 number, since 3×258378017³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258378011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94418 + ... + 97115.

It is an arithmetic number, because the mean of its divisors is an integer number (34476120).

Almost surely, 2^258378017 is an apocalyptic number.

It is an amenable number.

258378017 is a deficient number, since it is larger than the sum of its proper divisors (17430943).

258378017 is a wasteful number, since it uses less digits than its factorization.

258378017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191623.

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 258378017 is about 16074.1412523344. The cubic root of 258378017 is about 636.9204406978.

The spelling of 258378017 in words is "two hundred fifty-eight million, three hundred seventy-eight thousand, seventeen".