145503511 has 2 divisors, whose sum is σ = 145503512. Its totient is φ = 145503510.

The previous prime is 145503503. The next prime is 145503521. The reversal of 145503511 is 115305541.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145503511 - 2³ = 145503503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145503521) 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, 72751755 + 72751756.

It is an arithmetic number, because the mean of its divisors is an integer number (72751756).

Almost surely, 2^145503511 is an apocalyptic number.

145503511 is a deficient number, since it is larger than the sum of its proper divisors (1).

145503511 is an equidigital number, since it uses as much as digits as its factorization.

145503511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 145503511 is about 12062.4836165692. The cubic root of 145503511 is about 525.9661857139.

The spelling of 145503511 in words is "one hundred forty-five million, five hundred three thousand, five hundred eleven".