275117749 has 8 divisors (see below), whose sum is σ = 298406808. Its totient is φ = 252618240.

The previous prime is 275117723. The next prime is 275117761. The reversal of 275117749 is 947711572.

It can be written as a sum of positive squares in 4 ways, for example, as 2537649 + 272580100 = 1593^2 + 16510^2 .

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 275117749 - 2²⁵ = 241563317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275117149) 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, 196662 + ... + 198055.

It is an arithmetic number, because the mean of its divisors is an integer number (37300851).

Almost surely, 2^275117749 is an apocalyptic number.

It is an amenable number.

275117749 is a deficient number, since it is larger than the sum of its proper divisors (23289059).

275117749 is a wasteful number, since it uses less digits than its factorization.

275117749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394775.

The product of its digits is 123480, while the sum is 43.

The square root of 275117749 is about 16586.6738377530. The cubic root of 275117749 is about 650.3885243287.

The spelling of 275117749 in words is "two hundred seventy-five million, one hundred seventeen thousand, seven hundred forty-nine".