• 375 can be written using four 4's:

375 has 8 divisors (see below), whose sum is σ = 624. Its totient is φ = 200.

The previous prime is 373. The next prime is 379. The reversal of 375 is 573.

375 is an esthetic number in base 8 and base 9, because in such bases its adjacent digits differ by 1.

It is an ABA number since it can be written as A⋅B^{A}, here for A=3, B=5.

It is a trimorphic number since its cube, 52734375, ends in 375.

It is not a de Polignac number, because 375 - 2^{1} = 373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a d-powerful number, because it can be written as **3**^{5} + **7** + **5**^{3} .

It is a plaindrome in base 8, base 9, base 13 and base 16.

It is a nialpdrome in base 5 and base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73 + ... + 77.

It is an arithmetic number, because the mean of its divisors is an integer number (78).

375 is a deficient number, since it is larger than the sum of its proper divisors (249).

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

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

The sum of its prime factors is 18 (or 8 counting only the distinct ones).

The product of its digits is 105, while the sum is 15.

The square root of 375 is about 19.3649167310. The cubic root of 375 is about 7.2112478515.

Multiplying 375 by its sum of digits (15), we get a square (5625 = 75^{2}).

375 divided by its sum of digits (15) gives a square (25 = 5^{2}).

It can be divided in two parts, 3 and 75, that multiplied together give a square (225 = 15^{2}).

The spelling of 375 in words is "three hundred seventy-five", and thus it is an aban number and an oban number.

• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.121 sec. • engine limits •