1345572447 has 8 divisors (see below), whose sum is σ = 1832269056. Its totient is φ = 877962072.

The previous prime is 1345572443. The next prime is 1345572461. The reversal of 1345572447 is 7442755431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1345572447 - 2² = 1345572443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1345572399 and 1345572408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345572443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4771393 + ... + 4771674.

It is an arithmetic number, because the mean of its divisors is an integer number (229033632).

Almost surely, 2^1345572447 is an apocalyptic number.

1345572447 is a deficient number, since it is larger than the sum of its proper divisors (486696609).

1345572447 is an equidigital number, since it uses as much as digits as its factorization.

1345572447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9543117.

The product of its digits is 470400, while the sum is 42.

The square root of 1345572447 is about 36682.0452946670. The cubic root of 1345572447 is about 1103.9998859549. Note that the first 3 decimals are identical.

The spelling of 1345572447 in words is "one billion, three hundred forty-five million, five hundred seventy-two thousand, four hundred forty-seven".