145242511 has 2 divisors, whose sum is σ = 145242512. Its totient is φ = 145242510.

The previous prime is 145242497. The next prime is 145242551. The reversal of 145242511 is 115242541.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145242511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145242551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72621255 + 72621256.

It is an arithmetic number, because the mean of its divisors is an integer number (72621256).

Almost surely, 2^145242511 is an apocalyptic number.

145242511 is a deficient number, since it is larger than the sum of its proper divisors (1).

145242511 is an equidigital number, since it uses as much as digits as its factorization.

145242511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1600, while the sum is 25.

The square root of 145242511 is about 12051.6600931158. The cubic root of 145242511 is about 525.6515098304.

The spelling of 145242511 in words is "one hundred forty-five million, two hundred forty-two thousand, five hundred eleven".