1345343551 has 4 divisors (see below), whose sum is σ = 1345451704. Its totient is φ = 1345235400.

The previous prime is 1345343477. The next prime is 1345343561. The reversal of 1345343551 is 1553435431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1553435431 = 29 ⋅53566739.

It is a cyclic number.

It is not a de Polignac number, because 1345343551 - 2²⁵ = 1311789119 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 (1345343561) 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, 32565 + ... + 61246.

It is an arithmetic number, because the mean of its divisors is an integer number (336362926).

Almost surely, 2^1345343551 is an apocalyptic number.

1345343551 is a deficient number, since it is larger than the sum of its proper divisors (108153).

1345343551 is an equidigital number, since it uses as much as digits as its factorization.

1345343551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108152.

The product of its digits is 54000, while the sum is 34.

The square root of 1345343551 is about 36678.9251614602. The cubic root of 1345343551 is about 1103.9372817478.

Adding to 1345343551 its reverse (1553435431), we get a palindrome (2898778982).

The spelling of 1345343551 in words is "one billion, three hundred forty-five million, three hundred forty-three thousand, five hundred fifty-one".