1534035221 has 4 divisors (see below), whose sum is σ = 1534194444. Its totient is φ = 1533876000.

The previous prime is 1534035203. The next prime is 1534035241. The reversal of 1534035221 is 1225304351.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1225304351 = 12227 ⋅100213.

It can be written as a sum of positive squares in 2 ways, for example, as 1222900900 + 311134321 = 34970^2 + 17639^2 .

It is a cyclic number.

It is not a de Polignac number, because 1534035221 - 2⁶ = 1534035157 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 (1534035241) 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 3 ways as a sum of consecutive naturals, for example, 64160 + ... + 84761.

It is an arithmetic number, because the mean of its divisors is an integer number (383548611).

Almost surely, 2^1534035221 is an apocalyptic number.

It is an amenable number.

1534035221 is a deficient number, since it is larger than the sum of its proper divisors (159223).

1534035221 is a wasteful number, since it uses less digits than its factorization.

1534035221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159222.

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

The square root of 1534035221 is about 39166.7616864096. The cubic root of 1534035221 is about 1153.3074842366.

Adding to 1534035221 its reverse (1225304351), we get a palindrome (2759339572).

The spelling of 1534035221 in words is "one billion, five hundred thirty-four million, thirty-five thousand, two hundred twenty-one".