506531515 has 32 divisors (see below), whose sum is σ = 703572480. Its totient is φ = 342921984.

The previous prime is 506531513. The next prime is 506531527. The reversal of 506531515 is 515135605.

It is a cyclic number.

It is not a de Polignac number, because 506531515 - 2¹ = 506531513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (506531513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1459572 + ... + 1459918.

It is an arithmetic number, because the mean of its divisors is an integer number (21986640).

Almost surely, 2^506531515 is an apocalyptic number.

506531515 is a deficient number, since it is larger than the sum of its proper divisors (197040965).

506531515 is a wasteful number, since it uses less digits than its factorization.

506531515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771.

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 506531515 is about 22506.2550194385. The cubic root of 506531515 is about 797.1416300440.

The spelling of 506531515 in words is "five hundred six million, five hundred thirty-one thousand, five hundred fifteen".