534351221 has 4 divisors (see below), whose sum is σ = 535784172. Its totient is φ = 532918272.

The previous prime is 534351217. The next prime is 534351241. The reversal of 534351221 is 122153435.

It is a happy number.

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 267682321 + 266668900 = 16361^2 + 16330^2 .

It is a cyclic number.

It is not a de Polignac number, because 534351221 - 2² = 534351217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534351241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715916 + ... + 716661.

It is an arithmetic number, because the mean of its divisors is an integer number (133946043).

Almost surely, 2^534351221 is an apocalyptic number.

It is an amenable number.

534351221 is a deficient number, since it is larger than the sum of its proper divisors (1432951).

534351221 is a wasteful number, since it uses less digits than its factorization.

534351221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432950.

The product of its digits is 3600, while the sum is 26.

The square root of 534351221 is about 23116.0381769887. The cubic root of 534351221 is about 811.4758547415.

The spelling of 534351221 in words is "five hundred thirty-four million, three hundred fifty-one thousand, two hundred twenty-one".