275720497 has 8 divisors (see below), whose sum is σ = 297185000. Its totient is φ = 254292480.

The previous prime is 275720491. The next prime is 275720503. The reversal of 275720497 is 794027572.

It is an interprime number because it is at equal distance from previous prime (275720491) and next prime (275720503).

It can be written as a sum of positive squares in 4 ways, for example, as 57744801 + 217975696 = 7599^2 + 14764^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-275720497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275720491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7747 + ... + 24727.

It is an arithmetic number, because the mean of its divisors is an integer number (37148125).

Almost surely, 2^275720497 is an apocalyptic number.

It is an amenable number.

275720497 is a deficient number, since it is larger than the sum of its proper divisors (21464503).

275720497 is a wasteful number, since it uses less digits than its factorization.

275720497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18243.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 275720497 is about 16604.8335432789. The cubic root of 275720497 is about 650.8631507298.

The spelling of 275720497 in words is "two hundred seventy-five million, seven hundred twenty thousand, four hundred ninety-seven".