712514521 has 4 divisors (see below), whose sum is σ = 713031844. Its totient is φ = 711997200.

The previous prime is 712514507. The next prime is 712514527. The reversal of 712514521 is 125415217.

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 254083600 + 458430921 = 15940^2 + 21411^2 .

It is a cyclic number.

It is not a de Polignac number, because 712514521 - 2⁷ = 712514393 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 712514521.

It is not an unprimeable number, because it can be changed into a prime (712514527) 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, 256590 + ... + 259351.

It is an arithmetic number, because the mean of its divisors is an integer number (178257961).

Almost surely, 2^712514521 is an apocalyptic number.

It is an amenable number.

712514521 is a deficient number, since it is larger than the sum of its proper divisors (517323).

712514521 is a wasteful number, since it uses less digits than its factorization.

712514521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517322.

The product of its digits is 2800, while the sum is 28.

The square root of 712514521 is about 26692.9676319438. The cubic root of 712514521 is about 893.1640614372.

Adding to 712514521 its reverse (125415217), we get a palindrome (837929738).

The spelling of 712514521 in words is "seven hundred twelve million, five hundred fourteen thousand, five hundred twenty-one".