501520145 has 24 divisors (see below), whose sum is σ = 741268584. Its totient is φ = 323667456.

The previous prime is 501520057. The next prime is 501520153. The reversal of 501520145 is 541025105.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 286252561 + 215267584 = 16919^2 + 14672^2 .

It is not a de Polignac number, because 501520145 - 2¹⁰ = 501519121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 501520145.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56042 + ... + 64371.

It is an arithmetic number, because the mean of its divisors is an integer number (30886191).

Almost surely, 2^501520145 is an apocalyptic number.

It is an amenable number.

501520145 is a deficient number, since it is larger than the sum of its proper divisors (239748439).

501520145 is a wasteful number, since it uses less digits than its factorization.

501520145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120449 (or 120442 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 501520145 is about 22394.6454537686. The cubic root of 501520145 is about 794.5040721197.

The spelling of 501520145 in words is "five hundred one million, five hundred twenty thousand, one hundred forty-five".