101581255 has 8 divisors (see below), whose sum is σ = 123105024. Its totient is φ = 80460000.

The previous prime is 101581187. The next prime is 101581261. The reversal of 101581255 is 552185101.

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

It is not a de Polignac number, because 101581255 - 2¹¹ = 101579207 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100071 + ... + 101080.

It is an arithmetic number, because the mean of its divisors is an integer number (15388128).

Almost surely, 2^101581255 is an apocalyptic number.

101581255 is a deficient number, since it is larger than the sum of its proper divisors (21523769).

101581255 is a wasteful number, since it uses less digits than its factorization.

101581255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201257.

The product of its (nonzero) digits is 2000, while the sum is 28.

The square root of 101581255 is about 10078.7526509980. The cubic root of 101581255 is about 466.5926121152.

The spelling of 101581255 in words is "one hundred one million, five hundred eighty-one thousand, two hundred fifty-five".