145510009 has 2 divisors, whose sum is σ = 145510010. Its totient is φ = 145510008.

The previous prime is 145510007. The next prime is 145510033. The reversal of 145510009 is 900015541.

145510009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144672784 + 837225 = 12028^2 + 915^2 .

It is a cyclic number.

It is not a de Polignac number, because 145510009 - 2¹ = 145510007 is a prime.

Together with 145510007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145510007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72755004 + 72755005.

It is an arithmetic number, because the mean of its divisors is an integer number (72755005).

Almost surely, 2^145510009 is an apocalyptic number.

It is an amenable number.

145510009 is a deficient number, since it is larger than the sum of its proper divisors (1).

145510009 is an equidigital number, since it uses as much as digits as its factorization.

145510009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 145510009 is about 12062.7529610782. The cubic root of 145510009 is about 525.9740152556.

The spelling of 145510009 in words is "one hundred forty-five million, five hundred ten thousand, nine".