505280531 has 8 divisors (see below), whose sum is σ = 577624320. Its totient is φ = 432976968.

The previous prime is 505280527. The next prime is 505280539. The reversal of 505280531 is 135082505.

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 505280531 - 2² = 505280527 is a prime.

It is a super-2 number, since 2×505280531² = 510616830015283922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 505280494 and 505280503.

It is not an unprimeable number, because it can be changed into a prime (505280539) 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, 25040 + ... + 40466.

It is an arithmetic number, because the mean of its divisors is an integer number (72203040).

Almost surely, 2^505280531 is an apocalyptic number.

505280531 is a deficient number, since it is larger than the sum of its proper divisors (72343789).

505280531 is a wasteful number, since it uses less digits than its factorization.

505280531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20113.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 505280531 is about 22478.4459204812. The cubic root of 505280531 is about 796.4848538690.

The spelling of 505280531 in words is "five hundred five million, two hundred eighty thousand, five hundred thirty-one".