2751820145 has 4 divisors (see below), whose sum is σ = 3302184180. Its totient is φ = 2201456112.

The previous prime is 2751820117. The next prime is 2751820151. The reversal of 2751820145 is 5410281572.

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 1669212736 + 1082607409 = 40856^2 + 32903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2751820145 is a prime.

It is a super-2 number, since 2×2751820145² = 15145028220855642050, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 275182010 + ... + 275182019.

It is an arithmetic number, because the mean of its divisors is an integer number (825546045).

Almost surely, 2^2751820145 is an apocalyptic number.

It is an amenable number.

2751820145 is a deficient number, since it is larger than the sum of its proper divisors (550364035).

2751820145 is an equidigital number, since it uses as much as digits as its factorization.

2751820145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550364034.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 2751820145 is about 52457.7939395091. The cubic root of 2751820145 is about 1401.3286952116.

The spelling of 2751820145 in words is "two billion, seven hundred fifty-one million, eight hundred twenty thousand, one hundred forty-five".