5545399 has 2 divisors, whose sum is σ = 5545400. Its totient is φ = 5545398.

The previous prime is 5545367. The next prime is 5545403. The reversal of 5545399 is 9935455.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5545399 - 2⁵ = 5545367 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5545339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2772699 + 2772700.

It is an arithmetic number, because the mean of its divisors is an integer number (2772700).

Almost surely, 2^5545399 is an apocalyptic number.

5545399 is a deficient number, since it is larger than the sum of its proper divisors (1).

5545399 is an equidigital number, since it uses as much as digits as its factorization.

5545399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 121500, while the sum is 40.

The square root of 5545399 is about 2354.8670875444. The cubic root of 5545399 is about 177.0017661841.

It can be divided in two parts, 55 and 45399, that added together give a palindrome (45454).

The spelling of 5545399 in words is "five million, five hundred forty-five thousand, three hundred ninety-nine".