711551521 has 4 divisors (see below), whose sum is σ = 716983344. Its totient is φ = 706119700.

The previous prime is 711551509. The next prime is 711551543. The reversal of 711551521 is 125155117.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 711551521 - 2¹⁷ = 711420449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 711551521.

It is not an unprimeable number, because it can be changed into a prime (711551021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2715715 + ... + 2715976.

It is an arithmetic number, because the mean of its divisors is an integer number (179245836).

Almost surely, 2^711551521 is an apocalyptic number.

It is an amenable number.

711551521 is a deficient number, since it is larger than the sum of its proper divisors (5431823).

711551521 is a wasteful number, since it uses less digits than its factorization.

711551521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5431822.

The product of its digits is 1750, while the sum is 28.

The square root of 711551521 is about 26674.9230739284. The cubic root of 711551521 is about 892.7614943061.

The spelling of 711551521 in words is "seven hundred eleven million, five hundred fifty-one thousand, five hundred twenty-one".