7255145 has 8 divisors (see below), whose sum is σ = 8941704. Its totient is φ = 5647104.

The previous prime is 7255121. The next prime is 7255151. The reversal of 7255145 is 5415527.

It can be written as a sum of positive squares in 4 ways, for example, as 839056 + 6416089 = 916^2 + 2533^2 .

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 7255145 - 2⁶ = 7255081 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 19424 + ... + 19793.

It is an arithmetic number, because the mean of its divisors is an integer number (1117713).

Almost surely, 2^7255145 is an apocalyptic number.

It is an amenable number.

7255145 is a deficient number, since it is larger than the sum of its proper divisors (1686559).

7255145 is a wasteful number, since it uses less digits than its factorization.

7255145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39259.

The product of its digits is 7000, while the sum is 29.

The square root of 7255145 is about 2693.5376366407. The cubic root of 7255145 is about 193.5896043327.

It can be divided in two parts, 7255 and 145, that multiplied together give a triangular number (1051975 = T₁₄₅₀).

The spelling of 7255145 in words is "seven million, two hundred fifty-five thousand, one hundred forty-five".