712875521 has 4 divisors (see below), whose sum is σ = 713107200. Its totient is φ = 712643844.

The previous prime is 712875509. The next prime is 712875523. The reversal of 712875521 is 125578217.

712875521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 712875521 - 2²² = 708681217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (712875523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111161 + ... + 117398.

It is an arithmetic number, because the mean of its divisors is an integer number (178276800).

Almost surely, 2^712875521 is an apocalyptic number.

It is an amenable number.

712875521 is a deficient number, since it is larger than the sum of its proper divisors (231679).

712875521 is a wasteful number, since it uses less digits than its factorization.

712875521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231678.

The product of its digits is 39200, while the sum is 38.

The square root of 712875521 is about 26699.7288563011. The cubic root of 712875521 is about 893.3148783810.

The spelling of 712875521 in words is "seven hundred twelve million, eight hundred seventy-five thousand, five hundred twenty-one".