2261749275 has 144 divisors (see below), whose sum is σ = 4579421184. Its totient is φ = 1060899840.

The previous prime is 2261749271. The next prime is 2261749279. The reversal of 2261749275 is 5729471622.

2261749275 is a `hidden beast` number, since 2 + 2 + 617 + 4 + 9 + 27 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (2261749271) and next prime (2261749279).

It is not a de Polignac number, because 2261749275 - 2² = 2261749271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2261749275.

It is not an unprimeable number, because it can be changed into a prime (2261749271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4134552 + ... + 4135098.

It is an arithmetic number, because the mean of its divisors is an integer number (31801536).

Almost surely, 2^2261749275 is an apocalyptic number.

2261749275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2261749275 is an abundant number, since it is smaller than the sum of its proper divisors (2317671909).

2261749275 is a wasteful number, since it uses less digits than its factorization.

2261749275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 642 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 2261749275 is about 47557.8518753738. The cubic root of 2261749275 is about 1312.6476133297.

The spelling of 2261749275 in words is "two billion, two hundred sixty-one million, seven hundred forty-nine thousand, two hundred seventy-five".