531452021 has 8 divisors (see below), whose sum is σ = 562660320. Its totient is φ = 500567472.

The previous prime is 531451981. The next prime is 531452027. The reversal of 531452021 is 120254135.

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

It is a cyclic number.

It is not a de Polignac number, because 531452021 - 2⁶ = 531451957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531452027) 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, 77555 + ... + 84128.

It is an arithmetic number, because the mean of its divisors is an integer number (70332540).

Almost surely, 2^531452021 is an apocalyptic number.

It is an amenable number.

531452021 is a deficient number, since it is larger than the sum of its proper divisors (31208299).

531452021 is a wasteful number, since it uses less digits than its factorization.

531452021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161875.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 531452021 is about 23053.2431774794. The cubic root of 531452021 is about 810.0055992094.

The spelling of 531452021 in words is "five hundred thirty-one million, four hundred fifty-two thousand, twenty-one".