55090933 has 2 divisors, whose sum is σ = 55090934. Its totient is φ = 55090932.

The previous prime is 55090927. The next prime is 55090939. The reversal of 55090933 is 33909055.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (55090927) and next prime (55090939).

It can be written as a sum of positive squares in only one way, i.e., 40666129 + 14424804 = 6377^2 + 3798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55090933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55090939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27545466 + 27545467.

It is an arithmetic number, because the mean of its divisors is an integer number (27545467).

Almost surely, 2^55090933 is an apocalyptic number.

It is an amenable number.

55090933 is a deficient number, since it is larger than the sum of its proper divisors (1).

55090933 is an equidigital number, since it uses as much as digits as its factorization.

55090933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18225, while the sum is 34.

The square root of 55090933 is about 7422.3266567836. The cubic root of 55090933 is about 380.5047148457.

Adding to 55090933 its reverse (33909055), we get a palindrome (88999988).

The spelling of 55090933 in words is "fifty-five million, ninety thousand, nine hundred thirty-three".