55590433 has 2 divisors, whose sum is σ = 55590434. Its totient is φ = 55590432.

The previous prime is 55590421. The next prime is 55590461. The reversal of 55590433 is 33409555.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39526369 + 16064064 = 6287^2 + 4008^2 .

It is a cyclic number.

It is not a de Polignac number, because 55590433 - 2⁹ = 55589921 is a prime.

It is a super-2 number, since 2×55590433² = 6180592482254978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55590133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27795216 + 27795217.

It is an arithmetic number, because the mean of its divisors is an integer number (27795217).

Almost surely, 2^55590433 is an apocalyptic number.

It is an amenable number.

55590433 is a deficient number, since it is larger than the sum of its proper divisors (1).

55590433 is an equidigital number, since it uses as much as digits as its factorization.

55590433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40500, while the sum is 34.

The square root of 55590433 is about 7455.8992080097. The cubic root of 55590433 is about 381.6512468954.

Adding to 55590433 its reverse (33409555), we get a palindrome (88999988).

The spelling of 55590433 in words is "fifty-five million, five hundred ninety thousand, four hundred thirty-three".