516098421 has 6 divisors (see below), whose sum is σ = 745475510. Its totient is φ = 344065608.

The previous prime is 516098411. The next prime is 516098423. The reversal of 516098421 is 124890615.

516098421 is a `hidden beast` number, since 5 + 1 + 609 + 8 + 42 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 339075396 + 177023025 = 18414^2 + 13305^2 .

It is not a de Polignac number, because 516098421 - 2⁷ = 516098293 is a prime.

It is a super-3 number, since 3×516098421³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516098423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28672126 + ... + 28672143.

Almost surely, 2^516098421 is an apocalyptic number.

It is an amenable number.

516098421 is a deficient number, since it is larger than the sum of its proper divisors (229377089).

516098421 is a wasteful number, since it uses less digits than its factorization.

516098421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57344275 (or 57344272 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 516098421 is about 22717.7996513747. The cubic root of 516098421 is about 802.1289238494.

The spelling of 516098421 in words is "five hundred sixteen million, ninety-eight thousand, four hundred twenty-one".