533457921 has 8 divisors (see below), whose sum is σ = 712579744. Its totient is φ = 354987360.

The previous prime is 533457917. The next prime is 533457923. The reversal of 533457921 is 129754335.

It is a happy number.

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

It is not a de Polignac number, because 533457921 - 2² = 533457917 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 533457921.

It is not an unprimeable number, because it can be changed into a prime (533457923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160900 + ... + 164181.

It is an arithmetic number, because the mean of its divisors is an integer number (89072468).

Almost surely, 2^533457921 is an apocalyptic number.

It is an amenable number.

533457921 is a deficient number, since it is larger than the sum of its proper divisors (179121823).

533457921 is a wasteful number, since it uses less digits than its factorization.

533457921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325631.

The product of its digits is 113400, while the sum is 39.

The square root of 533457921 is about 23096.7080121822. The cubic root of 533457921 is about 811.0234084396.

The spelling of 533457921 in words is "five hundred thirty-three million, four hundred fifty-seven thousand, nine hundred twenty-one".