516201621 has 16 divisors (see below), whose sum is σ = 741820800. Its totient is φ = 317401920.

The previous prime is 516201619. The next prime is 516201629. The reversal of 516201621 is 126102615.

It is not a de Polignac number, because 516201621 - 2¹ = 516201619 is a prime.

It is a super-2 number, since 2×516201621² = 532928227046055282, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 516201591 and 516201600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516201629) 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, 49831 + ... + 59291.

It is an arithmetic number, because the mean of its divisors is an integer number (46363800).

Almost surely, 2^516201621 is an apocalyptic number.

It is an amenable number.

516201621 is a deficient number, since it is larger than the sum of its proper divisors (225619179).

516201621 is a wasteful number, since it uses less digits than its factorization.

516201621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10876.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 516201621 is about 22720.0708845725. The cubic root of 516201621 is about 802.1823853499.

The spelling of 516201621 in words is "five hundred sixteen million, two hundred one thousand, six hundred twenty-one".