534533721 has 8 divisors (see below), whose sum is σ = 714766944. Its totient is φ = 355328160.

The previous prime is 534533689. The next prime is 534533743. The reversal of 534533721 is 127335435.

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

It is not a de Polignac number, because 534533721 - 2⁵ = 534533689 is a prime.

It is a super-2 number, since 2×534533721² = 571452597772211682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (534533761) 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, 255700 + ... + 257781.

It is an arithmetic number, because the mean of its divisors is an integer number (89345868).

Almost surely, 2^534533721 is an apocalyptic number.

It is an amenable number.

534533721 is a deficient number, since it is larger than the sum of its proper divisors (180233223).

534533721 is a wasteful number, since it uses less digits than its factorization.

534533721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513831.

The product of its digits is 37800, while the sum is 33.

The square root of 534533721 is about 23119.9853157393. The cubic root of 534533721 is about 811.5682268749.

The spelling of 534533721 in words is "five hundred thirty-four million, five hundred thirty-three thousand, seven hundred twenty-one".