5715621 has 12 divisors (see below), whose sum is σ = 8741772. Its totient is φ = 3586176.

The previous prime is 5715617. The next prime is 5715631. The reversal of 5715621 is 1265175.

It can be written as a sum of positive squares in 2 ways, for example, as 2873025 + 2842596 = 1695^2 + 1686^2 .

It is not a de Polignac number, because 5715621 - 2² = 5715617 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5715601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18526 + ... + 18831.

It is an arithmetic number, because the mean of its divisors is an integer number (728481).

Almost surely, 2^5715621 is an apocalyptic number.

5715621 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5715621 is a deficient number, since it is larger than the sum of its proper divisors (3026151).

5715621 is a wasteful number, since it uses less digits than its factorization.

5715621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37380 (or 37377 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 5715621 is about 2390.7364973999. The cubic root of 5715621 is about 178.7946314620.

It can be divided in two parts, 5715 and 621, that added together give a palindrome (6336).

The spelling of 5715621 in words is "five million, seven hundred fifteen thousand, six hundred twenty-one".