5211127345 has 4 divisors (see below), whose sum is σ = 6253352820. Its totient is φ = 4168901872.

The previous prime is 5211127333. The next prime is 5211127349. The reversal of 5211127345 is 5437211125.

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 1617004944 + 3594122401 = 40212^2 + 59951^2 .

It is a cyclic number.

It is not a de Polignac number, because 5211127345 - 2¹³ = 5211119153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5211127349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521112730 + ... + 521112739.

It is an arithmetic number, because the mean of its divisors is an integer number (1563338205).

Almost surely, 2^5211127345 is an apocalyptic number.

It is an amenable number.

5211127345 is a deficient number, since it is larger than the sum of its proper divisors (1042225475).

5211127345 is a wasteful number, since it uses less digits than its factorization.

5211127345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042225474.

The product of its digits is 8400, while the sum is 31.

The square root of 5211127345 is about 72188.1385339725. The cubic root of 5211127345 is about 1733.7130919851.

The spelling of 5211127345 in words is "five billion, two hundred eleven million, one hundred twenty-seven thousand, three hundred forty-five".