5166160621 has 4 divisors (see below), whose sum is σ = 5213556700. Its totient is φ = 5118764544.

The previous prime is 5166160619. The next prime is 5166160673. The reversal of 5166160621 is 1260616615.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1260616615 = 5 ⋅252123323.

It can be written as a sum of positive squares in 2 ways, for example, as 2017267396 + 3148893225 = 44914^2 + 56115^2 .

It is a cyclic number.

It is not a de Polignac number, because 5166160621 - 2¹ = 5166160619 is a prime.

It is a super-3 number, since 3×5166160621³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5166160691) 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, 23697876 + ... + 23698093.

It is an arithmetic number, because the mean of its divisors is an integer number (1303389175).

Almost surely, 2^5166160621 is an apocalyptic number.

It is an amenable number.

5166160621 is a deficient number, since it is larger than the sum of its proper divisors (47396079).

5166160621 is a wasteful number, since it uses less digits than its factorization.

5166160621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47396078.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 5166160621 is about 71876.0086607485. The cubic root of 5166160621 is about 1728.7119530210.

The spelling of 5166160621 in words is "five billion, one hundred sixty-six million, one hundred sixty thousand, six hundred twenty-one".