55840633 has 2 divisors, whose sum is σ = 55840634. Its totient is φ = 55840632.

The previous prime is 55840627. The next prime is 55840637. The reversal of 55840633 is 33604855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40411449 + 15429184 = 6357^2 + 3928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55840633 is a prime.

It is not a weakly prime, because it can be changed into another prime (55840637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27920316 + 27920317.

It is an arithmetic number, because the mean of its divisors is an integer number (27920317).

Almost surely, 2^55840633 is an apocalyptic number.

It is an amenable number.

55840633 is a deficient number, since it is larger than the sum of its proper divisors (1).

55840633 is an equidigital number, since it uses as much as digits as its factorization.

55840633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 55840633 is about 7472.6590314292. The cubic root of 55840633 is about 382.2229654184. Note that the first 3 decimals are identical.

The spelling of 55840633 in words is "fifty-five million, eight hundred forty thousand, six hundred thirty-three".