1354403221 has 4 divisors (see below), whose sum is σ = 1354704352. Its totient is φ = 1354102092.

The previous prime is 1354403189. The next prime is 1354403227. The reversal of 1354403221 is 1223044531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1223044531 = 1249 ⋅979219.

It is a cyclic number.

It is not a de Polignac number, because 1354403221 - 2⁵ = 1354403189 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 (1354403227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143715 + ... + 152848.

It is an arithmetic number, because the mean of its divisors is an integer number (338676088).

Almost surely, 2^1354403221 is an apocalyptic number.

It is an amenable number.

1354403221 is a deficient number, since it is larger than the sum of its proper divisors (301131).

1354403221 is an equidigital number, since it uses as much as digits as its factorization.

1354403221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301130.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1354403221 is about 36802.2176098126. The cubic root of 1354403221 is about 1106.4097459162.

Adding to 1354403221 its reverse (1223044531), we get a palindrome (2577447752).

The spelling of 1354403221 in words is "one billion, three hundred fifty-four million, four hundred three thousand, two hundred twenty-one".