1345253137 has 2 divisors, whose sum is σ = 1345253138. Its totient is φ = 1345253136.

The previous prime is 1345253123. The next prime is 1345253171. The reversal of 1345253137 is 7313525431.

It is an a-pointer prime, because the next prime (1345253171) can be obtained adding 1345253137 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1035809856 + 309443281 = 32184^2 + 17591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345253137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1345253177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672626568 + 672626569.

It is an arithmetic number, because the mean of its divisors is an integer number (672626569).

Almost surely, 2^1345253137 is an apocalyptic number.

It is an amenable number.

1345253137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345253137 is an equidigital number, since it uses as much as digits as its factorization.

1345253137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 34.

The square root of 1345253137 is about 36677.6926346247. The cubic root of 1345253137 is about 1103.9125511077.

Adding to 1345253137 its reverse (7313525431), we get a palindrome (8658778568).

The spelling of 1345253137 in words is "one billion, three hundred forty-five million, two hundred fifty-three thousand, one hundred thirty-seven".