516509249 has 16 divisors (see below), whose sum is σ = 566419392. Its totient is φ = 469045248.

The previous prime is 516509219. The next prime is 516509263. The reversal of 516509249 is 942905615.

It is a cyclic number.

It is not a de Polignac number, because 516509249 - 2¹² = 516505153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (516509209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56417 + ... + 64929.

It is an arithmetic number, because the mean of its divisors is an integer number (35401212).

Almost surely, 2^516509249 is an apocalyptic number.

It is an amenable number.

516509249 is a deficient number, since it is larger than the sum of its proper divisors (49910143).

516509249 is a wasteful number, since it uses less digits than its factorization.

516509249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8656.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 516509249 is about 22726.8398375137. The cubic root of 516509249 is about 802.3417060157.

The spelling of 516509249 in words is "five hundred sixteen million, five hundred nine thousand, two hundred forty-nine".