2751254921 has 2 divisors, whose sum is σ = 2751254922. Its totient is φ = 2751254920.

The previous prime is 2751254873. The next prime is 2751254927. The reversal of 2751254921 is 1294521572.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2689459600 + 61795321 = 51860^2 + 7861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2751254921 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2751254927) 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 as a sum of consecutive naturals, namely, 1375627460 + 1375627461.

It is an arithmetic number, because the mean of its divisors is an integer number (1375627461).

Almost surely, 2^2751254921 is an apocalyptic number.

It is an amenable number.

2751254921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2751254921 is an equidigital number, since it uses as much as digits as its factorization.

2751254921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 38.

The square root of 2751254921 is about 52452.4062460437. The cubic root of 2751254921 is about 1401.2327443131.

The spelling of 2751254921 in words is "two billion, seven hundred fifty-one million, two hundred fifty-four thousand, nine hundred twenty-one".