2975375209 has 3 divisors (see below), whose sum is σ = 2975429757. Its totient is φ = 2975320662.

The previous prime is 2975375149. The next prime is 2975375233. The reversal of 2975375209 is 9025735792.

The square root of 2975375209 is 54547.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-2975375209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2975373209) 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 2 ways as a sum of consecutive naturals, for example, 27274 + ... + 81820.

It is an arithmetic number, because the mean of its divisors is an integer number (991809919).

Almost surely, 2^2975375209 is an apocalyptic number.

2975375209 is the 54547-th square number.

2975375209 is the 27274-th centered octagonal number.

It is an amenable number.

2975375209 is a deficient number, since it is larger than the sum of its proper divisors (54548).

2975375209 is an frugal number, since it uses more digits than its factorization.

2975375209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109094 (or 54547 counting only the distinct ones).

The product of its (nonzero) digits is 1190700, while the sum is 49.

The cubic root of 2975375209 is about 1438.2926022832.

Multiplying 2975375209 by its sum of digits (49), we get a square (145793385241 = 381829²).

The spelling of 2975375209 in words is "two billion, nine hundred seventy-five million, three hundred seventy-five thousand, two hundred nine".