501265 has 8 divisors (see below), whose sum is σ = 622440. Its totient is φ = 387072.

The previous prime is 501257. The next prime is 501271. The reversal of 501265 is 562105.

It is a happy number.

It is a Cunningham number, because it is equal to 708²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 501264 = 1^2 + 708^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 501265 - 2³ = 501257 is a prime.

501265 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1584 + ... + 1873.

It is an arithmetic number, because the mean of its divisors is an integer number (77805).

2⁵⁰¹²⁶⁵ is an apocalyptic number.

It is an amenable number.

501265 is a deficient number, since it is larger than the sum of its proper divisors (121175).

501265 is a wasteful number, since it uses less digits than its factorization.

501265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 501265 is about 708.0007062143. Note that the first 3 decimals coincide. The cubic root of 501265 is about 79.4369316398.

The spelling of 501265 in words is "five hundred one thousand, two hundred sixty-five".