275502145 has 4 divisors (see below), whose sum is σ = 330602580. Its totient is φ = 220401712.

The previous prime is 275502127. The next prime is 275502179. The reversal of 275502145 is 541205572.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 180848704 + 94653441 = 13448^2 + 9729^2 .

It is a cyclic number.

It is not a de Polignac number, because 275502145 - 2²¹ = 273404993 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27550210 + ... + 27550219.

It is an arithmetic number, because the mean of its divisors is an integer number (82650645).

Almost surely, 2^275502145 is an apocalyptic number.

It is an amenable number.

275502145 is a deficient number, since it is larger than the sum of its proper divisors (55100435).

275502145 is an equidigital number, since it uses as much as digits as its factorization.

275502145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55100434.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 275502145 is about 16598.2572880408. The cubic root of 275502145 is about 650.6912921453.

The spelling of 275502145 in words is "two hundred seventy-five million, five hundred two thousand, one hundred forty-five".