505257733 has 4 divisors (see below), whose sum is σ = 505572588. Its totient is φ = 504942880.

The previous prime is 505257713. The next prime is 505257737. The reversal of 505257733 is 337752505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 337752505 = 5 ⋅67550501.

It can be written as a sum of positive squares in 2 ways, for example, as 201696804 + 303560929 = 14202^2 + 17423^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505257733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505257692 and 505257701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505257737) 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, 155008 + ... + 158233.

It is an arithmetic number, because the mean of its divisors is an integer number (126393147).

Almost surely, 2^505257733 is an apocalyptic number.

It is an amenable number.

505257733 is a deficient number, since it is larger than the sum of its proper divisors (314855).

505257733 is a wasteful number, since it uses less digits than its factorization.

505257733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314854.

The product of its (nonzero) digits is 110250, while the sum is 37.

The square root of 505257733 is about 22477.9388067501. The cubic root of 505257733 is about 796.4728746920.

The spelling of 505257733 in words is "five hundred five million, two hundred fifty-seven thousand, seven hundred thirty-three".