505161533 has 8 divisors (see below), whose sum is σ = 524574456. Its totient is φ = 486086400.

The previous prime is 505161529. The next prime is 505161541. The reversal of 505161533 is 335161505.

It can be written as a sum of positive squares in 4 ways, for example, as 30052324 + 475109209 = 5482^2 + 21797^2 .

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 505161533 - 2² = 505161529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505161496 and 505161505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505161133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81398 + ... + 87383.

It is an arithmetic number, because the mean of its divisors is an integer number (65571807).

Almost surely, 2^505161533 is an apocalyptic number.

It is an amenable number.

505161533 is a deficient number, since it is larger than the sum of its proper divisors (19412923).

505161533 is a wasteful number, since it uses less digits than its factorization.

505161533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168895.

The product of its (nonzero) digits is 6750, while the sum is 29.

The square root of 505161533 is about 22475.7988289627. The cubic root of 505161533 is about 796.4223225685.

The spelling of 505161533 in words is "five hundred five million, one hundred sixty-one thousand, five hundred thirty-three".