27261145 has 8 divisors (see below), whose sum is σ = 33081480. Its totient is φ = 21563520.

The previous prime is 27261079. The next prime is 27261151. The reversal of 27261145 is 54116272.

It can be written as a sum of positive squares in 4 ways, for example, as 2304 + 27258841 = 48^2 + 5221^2 .

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

It is not a de Polignac number, because 27261145 - 2⁹ = 27260633 is a prime.

It is a super-2 number, since 2×27261145² = 1486340053422050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30186 + ... + 31075.

It is an arithmetic number, because the mean of its divisors is an integer number (4135185).

Almost surely, 2^27261145 is an apocalyptic number.

It is an amenable number.

27261145 is a deficient number, since it is larger than the sum of its proper divisors (5820335).

27261145 is an equidigital number, since it uses as much as digits as its factorization.

27261145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61355.

The product of its digits is 3360, while the sum is 28.

The square root of 27261145 is about 5221.2206427233. The cubic root of 27261145 is about 300.9641020753.

The spelling of 27261145 in words is "twenty-seven million, two hundred sixty-one thousand, one hundred forty-five".