5376821721 has 8 divisors (see below), whose sum is σ = 7171234560. Its totient is φ = 3583478352.

The previous prime is 5376821719. The next prime is 5376821767. The reversal of 5376821721 is 1271286735.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5376821721 - 2¹ = 5376821719 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5376821701) 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 7 ways as a sum of consecutive naturals, for example, 255561 + ... + 275798.

It is an arithmetic number, because the mean of its divisors is an integer number (896404320).

Almost surely, 2^5376821721 is an apocalyptic number.

It is an amenable number.

5376821721 is a deficient number, since it is larger than the sum of its proper divisors (1794412839).

5376821721 is a wasteful number, since it uses less digits than its factorization.

5376821721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534735.

The product of its digits is 141120, while the sum is 42.

The square root of 5376821721 is about 73326.8144746518. The cubic root of 5376821721 is about 1751.8969059429.

The spelling of 5376821721 in words is "five billion, three hundred seventy-six million, eight hundred twenty-one thousand, seven hundred twenty-one".