1145275761 has 8 divisors (see below), whose sum is σ = 1745182144. Its totient is φ = 654443280.

The previous prime is 1145275723. The next prime is 1145275783. The reversal of 1145275761 is 1675725411.

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

It is not a de Polignac number, because 1145275761 - 2⁷ = 1145275633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145275721) 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, 27268450 + ... + 27268491.

It is an arithmetic number, because the mean of its divisors is an integer number (218147768).

Almost surely, 2^1145275761 is an apocalyptic number.

It is an amenable number.

1145275761 is a deficient number, since it is larger than the sum of its proper divisors (599906383).

1145275761 is an equidigital number, since it uses as much as digits as its factorization.

1145275761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54536951.

The product of its digits is 58800, while the sum is 39.

The square root of 1145275761 is about 33841.9231279784. The cubic root of 1145275761 is about 1046.2529360766.

The spelling of 1145275761 in words is "one billion, one hundred forty-five million, two hundred seventy-five thousand, seven hundred sixty-one".