5071621 has 4 divisors (see below), whose sum is σ = 5078700. Its totient is φ = 5064544.

The previous prime is 5071609. The next prime is 5071639. The reversal of 5071621 is 1261705.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1261705 = 5 ⋅252341.

It can be written as a sum of positive squares in 2 ways, for example, as 3150625 + 1920996 = 1775^2 + 1386^2 .

It is a cyclic number.

It is not a de Polignac number, because 5071621 - 2⁵ = 5071589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5071592 and 5071601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5071921) 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, 2326 + ... + 3943.

It is an arithmetic number, because the mean of its divisors is an integer number (1269675).

Almost surely, 2^5071621 is an apocalyptic number.

It is an amenable number.

5071621 is a deficient number, since it is larger than the sum of its proper divisors (7079).

5071621 is an equidigital number, since it uses as much as digits as its factorization.

5071621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7078.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 5071621 is about 2252.0259767596. The cubic root of 5071621 is about 171.8101948963.

The spelling of 5071621 in words is "five million, seventy-one thousand, six hundred twenty-one".