55040233 has 2 divisors, whose sum is σ = 55040234. Its totient is φ = 55040232.

The previous prime is 55040197. The next prime is 55040261. The reversal of 55040233 is 33204055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48553024 + 6487209 = 6968^2 + 2547^2 .

It is a cyclic number.

It is not a de Polignac number, because 55040233 - 2¹³ = 55032041 is a prime.

It is not a weakly prime, because it can be changed into another prime (55040263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27520116 + 27520117.

It is an arithmetic number, because the mean of its divisors is an integer number (27520117).

Almost surely, 2^55040233 is an apocalyptic number.

It is an amenable number.

55040233 is a deficient number, since it is larger than the sum of its proper divisors (1).

55040233 is an equidigital number, since it uses as much as digits as its factorization.

55040233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 55040233 is about 7418.9104995275. The cubic root of 55040233 is about 380.3879532843.

Adding to 55040233 its reverse (33204055), we get a palindrome (88244288).

The spelling of 55040233 in words is "fifty-five million, forty thousand, two hundred thirty-three".