55444469 has 2 divisors, whose sum is σ = 55444470. Its totient is φ = 55444468.

The previous prime is 55444457. The next prime is 55444471. The reversal of 55444469 is 96444455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53831569 + 1612900 = 7337^2 + 1270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55444469 is a prime.

It is a super-2 number, since 2×55444469² = 6148178285383922, which contains 22 as substring.

Together with 55444471, 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 (55444439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27722234 + 27722235.

It is an arithmetic number, because the mean of its divisors is an integer number (27722235).

Almost surely, 2^55444469 is an apocalyptic number.

It is an amenable number.

55444469 is a deficient number, since it is larger than the sum of its proper divisors (1).

55444469 is an equidigital number, since it uses as much as digits as its factorization.

55444469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 41.

The square root of 55444469 is about 7446.1042834492. The cubic root of 55444469 is about 381.3169197589.

It can be divided in two parts, 5544446 and 9, that added together give a palindrome (5544455).

The spelling of 55444469 in words is "fifty-five million, four hundred forty-four thousand, four hundred sixty-nine".