275042081 has 4 divisors (see below), whose sum is σ = 289518000. Its totient is φ = 260566164.

The previous prime is 275042077. The next prime is 275042083. The reversal of 275042081 is 180240572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 275042081 - 2² = 275042077 is a prime.

It is a super-2 number, since 2×275042081² = 151296292641621122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (275042083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7237931 + ... + 7237968.

It is an arithmetic number, because the mean of its divisors is an integer number (72379500).

Almost surely, 2^275042081 is an apocalyptic number.

It is an amenable number.

275042081 is a deficient number, since it is larger than the sum of its proper divisors (14475919).

275042081 is a wasteful number, since it uses less digits than its factorization.

275042081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14475918.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 275042081 is about 16584.3926931317. The cubic root of 275042081 is about 650.3288915453.

The spelling of 275042081 in words is "two hundred seventy-five million, forty-two thousand, eighty-one".