145747507 has 2 divisors, whose sum is σ = 145747508. Its totient is φ = 145747506.

The previous prime is 145747501. The next prime is 145747529. The reversal of 145747507 is 705747541.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (705747541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145747507 - 2¹¹ = 145745459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145747507.

It is not a weakly prime, because it can be changed into another prime (145747501) 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 as a sum of consecutive naturals, namely, 72873753 + 72873754.

It is an arithmetic number, because the mean of its divisors is an integer number (72873754).

Almost surely, 2^145747507 is an apocalyptic number.

145747507 is a deficient number, since it is larger than the sum of its proper divisors (1).

145747507 is an equidigital number, since it uses as much as digits as its factorization.

145747507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137200, while the sum is 40.

The square root of 145747507 is about 12072.5932176977. The cubic root of 145747507 is about 526.2600204967.

The spelling of 145747507 in words is "one hundred forty-five million, seven hundred forty-seven thousand, five hundred seven".