1355312451 has 4 divisors (see below), whose sum is σ = 1807083272. Its totient is φ = 903541632.

The previous prime is 1355312447. The next prime is 1355312461. The reversal of 1355312451 is 1542135531.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1355312451 - 2² = 1355312447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1355312461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225885406 + ... + 225885411.

It is an arithmetic number, because the mean of its divisors is an integer number (451770818).

Almost surely, 2^1355312451 is an apocalyptic number.

1355312451 is a deficient number, since it is larger than the sum of its proper divisors (451770821).

1355312451 is an equidigital number, since it uses as much as digits as its factorization.

1355312451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451770820.

The product of its digits is 9000, while the sum is 30.

The square root of 1355312451 is about 36814.5684614121. The cubic root of 1355312451 is about 1106.6572733614.

Adding to 1355312451 its reverse (1542135531), we get a palindrome (2897447982).

The spelling of 1355312451 in words is "one billion, three hundred fifty-five million, three hundred twelve thousand, four hundred fifty-one".