7545121379 has 2 divisors, whose sum is σ = 7545121380. Its totient is φ = 7545121378.

The previous prime is 7545121361. The next prime is 7545121387. The reversal of 7545121379 is 9731215457.

It is a strong prime.

It is an emirp because it is prime and its reverse (9731215457) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7545121379 is a prime.

It is not a weakly prime, because it can be changed into another prime (7545121579) 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, 3772560689 + 3772560690.

It is an arithmetic number, because the mean of its divisors is an integer number (3772560690).

Almost surely, 2^7545121379 is an apocalyptic number.

7545121379 is a deficient number, since it is larger than the sum of its proper divisors (1).

7545121379 is an equidigital number, since it uses as much as digits as its factorization.

7545121379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 44.

The square root of 7545121379 is about 86862.6581391567. The cubic root of 7545121379 is about 1961.3514020167.

The spelling of 7545121379 in words is "seven billion, five hundred forty-five million, one hundred twenty-one thousand, three hundred seventy-nine".