516165541 has 4 divisors (see below), whose sum is σ = 517002732. Its totient is φ = 515328352.

The previous prime is 516165499. The next prime is 516165607. The reversal of 516165541 is 145561615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145561615 = 5 ⋅29112323.

It can be written as a sum of positive squares in 2 ways, for example, as 235469025 + 280696516 = 15345^2 + 16754^2 .

It is a cyclic number.

It is not a de Polignac number, because 516165541 - 2⁹ = 516165029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 516165497 and 516165506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516165341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417670 + ... + 418903.

It is an arithmetic number, because the mean of its divisors is an integer number (129250683).

Almost surely, 2^516165541 is an apocalyptic number.

It is an amenable number.

516165541 is a deficient number, since it is larger than the sum of its proper divisors (837191).

516165541 is an equidigital number, since it uses as much as digits as its factorization.

516165541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837190.

The product of its digits is 18000, while the sum is 34.

The square root of 516165541 is about 22719.2768590904. The cubic root of 516165541 is about 802.1636953564.

The spelling of 516165541 in words is "five hundred sixteen million, one hundred sixty-five thousand, five hundred forty-one".