275405081 has 4 divisors (see below), whose sum is σ = 314748672. Its totient is φ = 236061492.

The previous prime is 275405063. The next prime is 275405087. The reversal of 275405081 is 180504572.

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 275405081 - 2¹⁰ = 275404057 is a prime.

It is a super-2 number, since 2×275405081² = 151695917281233122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (275405087) 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, 19671785 + ... + 19671798.

It is an arithmetic number, because the mean of its divisors is an integer number (78687168).

Almost surely, 2^275405081 is an apocalyptic number.

It is an amenable number.

275405081 is a deficient number, since it is larger than the sum of its proper divisors (39343591).

275405081 is an equidigital number, since it uses as much as digits as its factorization.

275405081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39343590.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 275405081 is about 16595.3331090400. Note that the first 3 decimals coincide. The cubic root of 275405081 is about 650.6148667049.

The spelling of 275405081 in words is "two hundred seventy-five million, four hundred five thousand, eighty-one".