2271505 has 8 divisors (see below), whose sum is σ = 2745000. Its totient is φ = 1804416.

The previous prime is 2271499. The next prime is 2271551. The reversal of 2271505 is 5051722.

It can be written as a sum of positive squares in 4 ways, for example, as 33489 + 2238016 = 183^2 + 1496^2 .

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 2271505 - 2³ = 2271497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780 + ... + 2269.

It is an arithmetic number, because the mean of its divisors is an integer number (343125).

2^2271505 is an apocalyptic number.

It is an amenable number.

2271505 is a deficient number, since it is larger than the sum of its proper divisors (473495).

2271505 is a wasteful number, since it uses less digits than its factorization.

2271505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 2271505 is about 1507.1512863678. The cubic root of 2271505 is about 131.4532210833.

It can be divided in two parts, 2271 and 505, that multiplied together give a triangular number (1146855 = T₁₅₁₄).

The spelling of 2271505 in words is "two million, two hundred seventy-one thousand, five hundred five".