1355514221 has 8 divisors (see below), whose sum is σ = 1359276000. Its totient is φ = 1351759248.

The previous prime is 1355514217. The next prime is 1355514229. The reversal of 1355514221 is 1224155531.

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 1355514221 - 2² = 1355514217 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 (1355514229) 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, 903530 + ... + 905028.

It is an arithmetic number, because the mean of its divisors is an integer number (169909500).

Almost surely, 2^1355514221 is an apocalyptic number.

It is an amenable number.

1355514221 is a deficient number, since it is larger than the sum of its proper divisors (3761779).

1355514221 is an equidigital number, since it uses as much as digits as its factorization.

1355514221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403.

The product of its digits is 6000, while the sum is 29.

The square root of 1355514221 is about 36817.3087147879. The cubic root of 1355514221 is about 1106.7121879208.

Adding to 1355514221 its reverse (1224155531), we get a palindrome (2579669752).

The spelling of 1355514221 in words is "one billion, three hundred fifty-five million, five hundred fourteen thousand, two hundred twenty-one".