275528081 has 8 divisors (see below), whose sum is σ = 276884328. Its totient is φ = 274176000.

The previous prime is 275528051. The next prime is 275528107. The reversal of 275528081 is 180825572.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 25603600 + 249924481 = 5060^2 + 15809^2 .

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 275528081 - 2¹⁸ = 275265937 is a prime.

It is a super-2 number, since 2×275528081² = 151831446839085122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275528051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269351 + ... + 270371.

It is an arithmetic number, because the mean of its divisors is an integer number (34610541).

Almost surely, 2^275528081 is an apocalyptic number.

It is an amenable number.

275528081 is a deficient number, since it is larger than the sum of its proper divisors (1356247).

275528081 is a wasteful number, since it uses less digits than its factorization.

275528081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 275528081 is about 16599.0385564948. The cubic root of 275528081 is about 650.7117103769.

The spelling of 275528081 in words is "two hundred seventy-five million, five hundred twenty-eight thousand, eighty-one".