501065765 has 4 divisors (see below), whose sum is σ = 601278924. Its totient is φ = 400852608.

The previous prime is 501065723. The next prime is 501065767. The reversal of 501065765 is 567560105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 221473924 + 279591841 = 14882^2 + 16721^2 .

It is a cyclic number.

It is not a de Polignac number, because 501065765 - 2¹⁶ = 501000229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501065767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50106572 + ... + 50106581.

It is an arithmetic number, because the mean of its divisors is an integer number (150319731).

Almost surely, 2^501065765 is an apocalyptic number.

It is an amenable number.

501065765 is a deficient number, since it is larger than the sum of its proper divisors (100213159).

501065765 is a wasteful number, since it uses less digits than its factorization.

501065765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100213158.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 501065765 is about 22384.4983191493. The cubic root of 501065765 is about 794.2640579392.

The spelling of 501065765 in words is "five hundred one million, sixty-five thousand, seven hundred sixty-five".