1345222651 has 4 divisors (see below), whose sum is σ = 1347962904. Its totient is φ = 1342482400.

The previous prime is 1345222603. The next prime is 1345222661. The reversal of 1345222651 is 1562225431.

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

It is a cyclic number.

It is not a de Polignac number, because 1345222651 - 2⁹ = 1345222139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345222601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1369390 + ... + 1370371.

It is an arithmetic number, because the mean of its divisors is an integer number (336990726).

Almost surely, 2^1345222651 is an apocalyptic number.

1345222651 is a deficient number, since it is larger than the sum of its proper divisors (2740253).

1345222651 is an equidigital number, since it uses as much as digits as its factorization.

1345222651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740252.

The product of its digits is 14400, while the sum is 31.

The square root of 1345222651 is about 36677.2770390606. The cubic root of 1345222651 is about 1103.9042121240.

The spelling of 1345222651 in words is "one billion, three hundred forty-five million, two hundred twenty-two thousand, six hundred fifty-one".