1354523221 has 8 divisors (see below), whose sum is σ = 1397044224. Its totient is φ = 1312573200.

The previous prime is 1354523201. The next prime is 1354523237. The reversal of 1354523221 is 1223254531.

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 1354523221 - 2⁵ = 1354523189 is a prime.

It is a super-3 number, since 3×1354523221³ (a number of 28 digits) contains 333 as substring.

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 1354523221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1354523201) 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, 137925 + ... + 147418.

It is an arithmetic number, because the mean of its divisors is an integer number (174630528).

Almost surely, 2^1354523221 is an apocalyptic number.

It is an amenable number.

1354523221 is a deficient number, since it is larger than the sum of its proper divisors (42521003).

1354523221 is a wasteful number, since it uses less digits than its factorization.

1354523221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285491.

The product of its digits is 7200, while the sum is 28.

The square root of 1354523221 is about 36803.8479102390. The cubic root of 1354523221 is about 1106.4424208849.

Adding to 1354523221 its reverse (1223254531), we get a palindrome (2577777752).

The spelling of 1354523221 in words is "one billion, three hundred fifty-four million, five hundred twenty-three thousand, two hundred twenty-one".