1345224401 has 2 divisors, whose sum is σ = 1345224402. Its totient is φ = 1345224400.

The previous prime is 1345224389. The next prime is 1345224407. The reversal of 1345224401 is 1044225431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 697012801 + 648211600 = 26401^2 + 25460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345224401 - 2¹⁸ = 1344962257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1345224407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672612200 + 672612201.

It is an arithmetic number, because the mean of its divisors is an integer number (672612201).

Almost surely, 2^1345224401 is an apocalyptic number.

It is an amenable number.

1345224401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345224401 is an equidigital number, since it uses as much as digits as its factorization.

1345224401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 1345224401 is about 36677.3008957857. The cubic root of 1345224401 is about 1103.9046908134.

Adding to 1345224401 its reverse (1044225431), we get a palindrome (2389449832).

The spelling of 1345224401 in words is "one billion, three hundred forty-five million, two hundred twenty-four thousand, four hundred one".