55426433 has 2 divisors, whose sum is σ = 55426434. Its totient is φ = 55426432.

The previous prime is 55426411. The next prime is 55426447. The reversal of 55426433 is 33462455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43784689 + 11641744 = 6617^2 + 3412^2 .

It is a cyclic number.

It is not a de Polignac number, because 55426433 - 2⁸ = 55426177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55426433.

It is not a weakly prime, because it can be changed into another prime (55426633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27713216 + 27713217.

It is an arithmetic number, because the mean of its divisors is an integer number (27713217).

Almost surely, 2^55426433 is an apocalyptic number.

It is an amenable number.

55426433 is a deficient number, since it is larger than the sum of its proper divisors (1).

55426433 is an equidigital number, since it uses as much as digits as its factorization.

55426433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 32.

The square root of 55426433 is about 7444.8930818380. The cubic root of 55426433 is about 381.2755680067.

Adding to 55426433 its reverse (33462455), we get a palindrome (88888888).

The spelling of 55426433 in words is "fifty-five million, four hundred twenty-six thousand, four hundred thirty-three".