5815541 has 2 divisors, whose sum is σ = 5815542. Its totient is φ = 5815540.

The previous prime is 5815529. The next prime is 5815543. The reversal of 5815541 is 1455185.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3076516 + 2739025 = 1754^2 + 1655^2 .

It is a cyclic number.

It is not a de Polignac number, because 5815541 - 2¹⁸ = 5553397 is a prime.

Together with 5815543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5815543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2907770 + 2907771.

It is an arithmetic number, because the mean of its divisors is an integer number (2907771).

Almost surely, 2^5815541 is an apocalyptic number.

It is an amenable number.

5815541 is a deficient number, since it is larger than the sum of its proper divisors (1).

5815541 is an equidigital number, since it uses as much as digits as its factorization.

5815541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000, while the sum is 29.

The square root of 5815541 is about 2411.5432818011. The cubic root of 5815541 is about 179.8305091792.

The spelling of 5815541 in words is "five million, eight hundred fifteen thousand, five hundred forty-one".