516112421 has 16 divisors (see below), whose sum is σ = 569963520. Its totient is φ = 463453680.

The previous prime is 516112417. The next prime is 516112489. The reversal of 516112421 is 124211615.

It is a cyclic number.

It is not a de Polignac number, because 516112421 - 2² = 516112417 is a prime.

It is a super-2 number, since 2×516112421² = 532744062220962482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516112321) 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, 346340 + ... + 347826.

It is an arithmetic number, because the mean of its divisors is an integer number (35622720).

Almost surely, 2^516112421 is an apocalyptic number.

It is an amenable number.

516112421 is a deficient number, since it is larger than the sum of its proper divisors (53851099).

516112421 is a wasteful number, since it uses less digits than its factorization.

516112421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864.

The product of its digits is 480, while the sum is 23.

The square root of 516112421 is about 22718.1077777178. The cubic root of 516112421 is about 802.1361767963.

The spelling of 516112421 in words is "five hundred sixteen million, one hundred twelve thousand, four hundred twenty-one".