516490121 has 4 divisors (see below), whose sum is σ = 590274432. Its totient is φ = 442705812.

The previous prime is 516490103. The next prime is 516490123. The reversal of 516490121 is 121094615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 516490121 - 2⁶ = 516490057 is a prime.

It is a super-3 number, since 3×516490121³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (516490123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36892145 + ... + 36892158.

It is an arithmetic number, because the mean of its divisors is an integer number (147568608).

Almost surely, 2^516490121 is an apocalyptic number.

It is an amenable number.

516490121 is a deficient number, since it is larger than the sum of its proper divisors (73784311).

516490121 is an equidigital number, since it uses as much as digits as its factorization.

516490121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73784310.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 516490121 is about 22726.4190096020. The cubic root of 516490121 is about 802.3318014614.

The spelling of 516490121 in words is "five hundred sixteen million, four hundred ninety thousand, one hundred twenty-one".