532685721 has 4 divisors (see below), whose sum is σ = 710247632. Its totient is φ = 355123812.

The previous prime is 532685719. The next prime is 532685749. The reversal of 532685721 is 127586235.

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 not a de Polignac number, because 532685721 - 2¹ = 532685719 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 532685721.

It is not an unprimeable number, because it can be changed into a prime (532685521) 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, 88780951 + ... + 88780956.

It is an arithmetic number, because the mean of its divisors is an integer number (177561908).

Almost surely, 2^532685721 is an apocalyptic number.

It is an amenable number.

532685721 is a deficient number, since it is larger than the sum of its proper divisors (177561911).

532685721 is a wasteful number, since it uses less digits than its factorization.

532685721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177561910.

The product of its digits is 100800, while the sum is 39.

The square root of 532685721 is about 23079.9852902899. The cubic root of 532685721 is about 810.6318907093.

The spelling of 532685721 in words is "five hundred thirty-two million, six hundred eighty-five thousand, seven hundred twenty-one".